SECONDARY SOURCE OF INJURY OR DISEASE
RULES AND EXAMPLES
Overview
The purpose of the Secondary Source variable is to capture more information about the injury/disease Event
than is captured by the Source variable alone. For example, consider the following two examples:
a) When a worker is struck by a falling object, that object is the Source but we do not know from where or
what the object fell. Secondary Source in this case would be the shelf from which the object (Source) fell
(Event);
b) Where a worker falls to a lower level, the surface or object on which the worker fell is the Source but we
do not know what initiated the worker‘s fall. Secondary Source here would be the object, person,
condition or substance that initiated the fall (Event) to a lower level (Source).
Therefore, the Secondary Source variable relates to the Event and to the Source. However, depending on the
circumstances of the case being coded, Secondary Source may relate more directly to the Event (see example
(b) above) or more directly to the Source (see example (a) above). However, since Event is coded after coding for
Source, and since the purpose of coding for Secondary Source is to generally capture more information about the
injury Event, coding for Secondary Source starts by considering the code chosen for Event.
The codes used for coding the Secondary Source variable are the same codes used for coding the Source
variable.
Definition
The Secondary Source variable provides more information about how the Event and Source contributed to the
injury or disease by identifying what object, substance, condition or person directly initiated the event or what
directly generated the identified source.
General Guidelines
(a) The Secondary Source is linked to “Event or Exposure”. The rule to be used to code Secondary Source
depends on the code that has been chosen for “Event or Exposure”. The Secondary Source coding rules
corresponding to the different “Event or Exposure” codes are given in rules (a) to (w) below. Rules (a) to (w)
are associated with specific “Event or Exposure” codes. The remaining coding rule, rule (x), is a general
rule that is used if events or exposures other than those identified in rules (a) to (w) have been coded.
(b) When Secondary Source is coded, the codes for “Source of Injury or Disease” are used.
(c) For some of the “Events and Exposures” identified in rules (a) to (w), the Secondary Source coding rules
apply only in some circumstances. In circumstances where the coding rule does not apply, Secondary
Source would be coded as Unknown, 99990.
(d) For the Events and Exposures covered by rule (x), the Secondary Source would be coded as Unknown,
99990 if no Secondary Source can be coded under rule (x).
(e) Code 99990 is used in (c) and (d) above rather than leaving Secondary Source blank. This permits users
of the coded data to distinguish between cases where an attempt was made to code Secondary Source
(meaning code 99990 was selected), and cases where no attempt was made to code Secondary Source.
Last Updated: June 9, 2017
1
Table of Contents
Overview .................................................................................................................................................................... 1
Definition .................................................................................................................................................................... 1
General Guidelines .................................................................................................................................................... 1
Secondary Source Selection Rules ........................................................................................................................... 3
(a) 01000 – 01900: Struck against object .............................................................................................................. 3
(b) 02100: Struck by falling object .......................................................................................................................... 4
(c) 02200 – 02290: Struck by flying object ............................................................................................................. 5
(d) 02300 – 02390: Struck by slipping or swinging object ..................................................................................... 6
(e) All other Struck by codes, namely: 02000, 02400, 02900 ................................................................................ 7
(f) 03000 – 03900: Caught in ................................................................................................................................. 8
(g) 05300: Foreign matter in eye ............................................................................................................................ 9
(h) 11000 – 11900: Fall to lower level .................................................................................................................. 10
(i) 12000 – 12900: Jump to lower level ................................................................................................................ 11
(j) 13000 – 13900: Fall on same level .................................................................................................................. 12
(k) 21000 – 21900: Bodily reaction ...................................................................................................................... 13
(l) 22000 – 22900: Overexertion .......................................................................................................................... 14
(m) 23000 – 23901: Repetitive motion ................................................................................................................. 15
(n) 31000 – 31900: Contact with electric current ................................................................................................. 16
(o) 32300 – 32400: Contact with hot or cold objects or substances .................................................................... 17
(p) 34000 – 34900: Exposure to noxious substances.......................................................................................... 18
(q) 35000 – 35200: Exposure to noise ................................................................................................................. 19
(r) 36000 – 36900: Exposure to radiation ............................................................................................................ 20
(s) 41000 – 41300, 42000 – 42200: Collisions of highway and non- highway vehicles ...................................... 21
(t) 41400 – 41490, 42300 – 42390: Non-collision vehicle accidents ................................................................... 22
(u) 44000 – 46900: Transportation accident - rail, water, air ............................................................................... 23
(v) 50000 – 59000: Fire or Explosion ................................................................................................................... 24
(w) 61000 – 69000: Assaults, violent acts, harassment ...................................................................................... 26
(x) All other Event or Exposure Codes: ................................................................................................................ 27
00000; 04000 – 05200; 05900 – 10000; 19000; 20000; 24000 – 30000; 32000 – 32200; 32900; 33000 –
33900; 37000 – 40000; 41900; 42900 – 43300; 43900; 49000; 60000; 90000 – 90090 ................................ 27
Last Updated: June 9, 2017
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Secondary Source Selection Rules
(a) 01000 – 01900: Struck against object
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(a) 01000 – 01900
(Struck against
object)
Any external object, substance,
person, or condition that directly
started the body in motion towards
the Source is the Secondary Source.
NOTE: If no external object,
substance, person or condition
started the body in motion,
Secondary Source is 56200, Bodily
motion or position of injured, ill
worker.
Last Updated: June 9, 2017
Examples
o
If a worker slips on (other than the working
surface), trips over, or is pushed by an
object, then that object is the Secondary
Source. For example, if the worker tripped
over a pallet on the floor, and struck his
head against the edge of a storage rack,
the pallet is the Secondary Source (16000).
o
If the worker was accidentally pushed by a
co–worker, causing him to bump into a
load being carried by movers, the
Secondary Source is the co–worker
(57200).
o
If the worker slipped on ice on the floor,
and hit his head against the stair rail, the
ice is the Secondary Source (93730).
o
If a strong wind threw the worker against
the building wall, the wind is the
Secondary Source (93720).
o
If the worker lost his visibility in a heavy
fog, and was injured when he bumped into
a tree, the Secondary Source is fog
93710.
o
If the worker hit her knee against the edge
of a desk, the Secondary Source is 56200.
o
If the worker stepped on a nail, the
Secondary Source is 56200.
o
If the worker bends to retrieve an object
then strikes against another object on
their way back up, the Secondary Source
is 56200, not the object reached for. The
worker’s bodily motion (when
straightening back up after bending)
directly started the body in motion
towards the object struck against.
3
(b) 02100: Struck by falling object
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(b) 02100 (Struck
by falling object)
The origin of the falling object
is the Secondary Source.
Last Updated: June 9, 2017
Examples
o
If an object fell from a bookcase, the
bookcase is the Secondary Source
(21100).
o
If a construction worker was struck by a
hammer dropped by a co–worker located
above him, the Secondary Source is the
co–worker (57200).
o
If the worker himself dropped the
hammer on his foot, the Secondary
Source is 56900, Person–injured or ill
worker, n.e.c.
4
(c) 02200 – 02290: Struck by flying object
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(c) 02200 – 02290
(Struck by flying
object)
Examples
The origin of the flying object is the
Secondary Source.
GUIDELINES
o
If a piece of grinding wheel broke off and
struck the worker, the piece of the grinding
wheel (49000) is the Source, and the
grinding wheel is the Secondary Source
(71740).
2. If the flying object was propelled by o
a machine or tool (Source division
3* or 7*), the machine or tool is the
Secondary Source.
If a board is propelled by a machine saw in
a saw mill, the board (41500) is the Source,
and the machine saw (35700) is the
Secondary Source.
1. Where a flying object was
originally part of a machine or
other equipment, the machine or
equipment is the Secondary
Source.
3. If the object was ejected under
power by a tool or equipment
(usually designed for that
purpose), the tool or equipment is
the Secondary Source.
Last Updated: June 9, 2017
o
If a particle of wood being sawn with a
chainsaw struck the worker’s eye, the
particle of wood is the Source (95141),
and the chainsaw (72210) is the
Secondary Source.
o
If a staple from a pneumatic stapler struck
the worker, the Source is the staple
(42170), and the pneumatic stapler
(72950) is the Secondary Source.
5
(d) 02300 – 02390: Struck by slipping or swinging object
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(d) 02300 – 02390
(Struck by slipping
or swinging object)
GUIDELINES
Examples
o
1. The object, equipment, or person
that held the slipping object is the o
Secondary Source.
2. If some force (e.g., person,
wind) set the swinging object in
motion, that force is the
Secondary Source. If no force
was involved or it’s not known
that a force was involved, the
object to which the swinging
object was attached or the
person who held the swinging
object is the Secondary Source
(see explanation against event
023*).
Last Updated: June 9, 2017
If the object slipped from a person’s hand,
the Secondary Source is the person.
If the object slipped from a hoist, the
Secondary Source is the hoist.
o
If the worker was struck by a door that
was swung open by a customer, the
Secondary Source is the customer
(57901).
o
If the worker was struck by a car door
that was swung open by the wind, the
Source is the car and the Secondary
Source is 93720 High winds, gusts.
o
If the worker was struck by a swinging
door when he was leaving the building,
the Secondary Source is the building to
which the door is attached (64200).
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(e) All other Struck by codes, namely: 02000, 02400, 02900
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(e) (All other Struck The object, substance, condition, or
by codes, namely: person that provided the energy to
02000, 02400,
the Source is the Secondary Source.
02900)
Examples
o
If the worker was struck by the wheels of
handcart being pushed by a co–worker,
the Secondary Source is the co–worker
(57200).
o
If some cans of food fell off a conveyor
belt, rolled across the floor and struck the
worker, the conveyor is the Secondary
Source (34210).
The Event in the above cases is 02400,
Struck by rolling, sliding object on floor)
o
If the worker was struck by food cans
moving on a conveyor belt, the conveyor
is the Secondary Source (34210).
(The Event in the above case is 02900,
Struck by object, n.e.c.)
Last Updated: June 9, 2017
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(f) 03000 – 03900: Caught in
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(f) 03000 – 03900
(Caught in)
Examples
o
If a worker’s clothing (example: glove),
jewellery or hair got caught in a machine,
and led to the worker being caught in the
machine, the clothing (example: glove),
jewellery or hair would be the Secondary
Source.
o
If the worker slipped on some grease on
the floor, causing him to get caught in a
machine, the grease is the Secondary
Source (08440).
2. Where a worker is caught
between two objects and one of
the objects is coded as Source,
the other object is the
Secondary Source.
o
If a worker was pinned against the wall
by a robot, the robot is the Source
(39200, Product Assembly Machinery
n.e.c.) and the Secondary Source is the
wall (63700).
3. Where a worker is caught in a
specific part of a machine or
tool, object or structure, the
specific part is the Secondary
Source (codes in Source
Division 4* may be used here),
unless there is an indication
that this was the result of the
worker’s clothing, etc., being
caught. In this case the
clothing, hair, etc., would be the
Secondary Source as instructed
by Guideline (f) 1.
o
If a worker is caught between two closing
elevator doors, the elevator (34600) is
the Source, and the Secondary Source is
the doors (63100).
o
If the worker’s hand was caught in the
gears of a machine, the gears (44260)
are the Secondary Source.
o
But: If a worker’s glove got caught in the
gears of a machine, and led to the
worker’s hand being caught in the
machine, the glove is the Secondary
Source (92110).
o
If the worker’s hands got caught in the
rollers of a conveyor, the conveyor is the
Source (34120) and the Secondary
Source is the rollers (44270).
GUIDELINES
1. Any object or substance that
caused the person to be 'caught
in' is the Secondary Source.
NOTE: Where a worker is caught in
part of a structure so that Source
Guideline c) applies and that part
must be the Source, code
Secondary Source as Unknown
(99990) unless another part of the
structure was involved as well.
Last Updated: June 9, 2017
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(g) 05300: Foreign matter in eye
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(g) 05300 (Foreign
matter in eye)
Any substance, equipment, object or
condition that set the foreign matter
“in motion” is the Secondary Source.
Examples
o
If the wind blew a sharp object into the
worker’s eye, the wind is the Secondary
Source (93720).
o
If the worker got dust in his eye while
using an impact wrench outdoors on a
windy day, the wind is the Secondary
Source (93720).
GUIDELINES
o
If the foreign matter that entered the
eye was set in motion by the use of
a tool or other equipment, the tool
or equipment is the Secondary
Source.
If a faller was using a chain saw, and a
particle of wood being sawn entered his
eye, the particle of wood is the Source
(95141) and the chainsaw (72210) is the
Secondary Source.
o
CAUTION: If a worker got a particle of
cement in his eye when pouring cement
into a bucket, the bucket is not the
Secondary Source – the bucket did not
set the cement in motion. The Secondary
Source is 99990 in this case.
Last Updated: June 9, 2017
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(h) 11000 – 11900: Fall to lower level
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
Examples
(h) 11000 – 11900 The object, substance, person or
(Fall to lower level) condition that initiated the fall would
be the Secondary Source, provided
there is some indication that it
contributed in some way to the fall.
GUIDELINES
o
If the worker slipped on, tripped over,
was pushed by, or carried an object
(provided there is some indication that it
contributed in some way to the fall), that
object is the Secondary Source.
2. If there is an indication that a
substance initiated the fall, that
substance is the Secondary
Source.
o
Where the worker fell because of a loss
of consciousness, the substance that
caused the loss of consciousness is the
Secondary Source.
3. If there is an indication that a
person initiated the fall, that
person is the Secondary
Source.
o
If the worker fell down the stairs as a
result of being pushed by a co– worker
(non-violent), the co–worker is the
Secondary Source (57200).
1. If there is an indication that an
object other than the working
surface initiated the fall, that
object is the Secondary Source.
NOTE: If violent, Event = Division 6* and
Secondary Source rule = rule (w).
4. If there is an indication that a
condition initiated the fall, that
condition is the Secondary
Source.
o
If the worker was on a ladder when he
got dizzy and fell, the Secondary Source
is 56100, Bodily Conditions of injured, ill
worker.
5. Where the fall was initiated by
the collapse of material or
equipment, the material or
equipment is the Secondary
Source.
o
If the worker fell when the scaffold he
was working from collapsed and fell, the
Secondary Source is the scaffold
(64600).
6. If none of the above guidelines
apply, use code 56200 (Bodily
motion or position of injured, ill
worker.)
Last Updated: June 9, 2017
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(i) 12000 – 12900: Jump to lower level
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(i) 12000 – 12900
(Jump to lower
level)
The object, structure or equipment
jumped from is the Secondary
Source.
Last Updated: June 9, 2017
Examples
o
If the worker jumped from the ladder when
he felt it tilting, the ladder is the Secondary
Source (74000).
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(j) 13000 – 13900: Fall on same level
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
Examples
(j) 13000 – 13900
The object, substance, person or
(Fall on same level) condition that initiated the fall would
be the Secondary Source provided
there is some indication that it
contributed in some way to the fall.
GUIDELINES
1. If there is an indication that an
object other than the working
surface initiated the fall, that
object is the Secondary Source
o
If the worker slipped on, tripped over,
was pushed by, or carried an object, that
object is the Secondary Source.
2. If there is an indication that a
substance initiated the fall, that
substance is the Secondary
Source
o
If the worker fell because of a loss of
consciousness, the substance that
caused the loss of consciousness is the
Secondary Source.
3. If there is an indication that a
person initiated the fall, that
person is the Secondary
Source.
o
If the worker fell as a result of being
pushed by a co–worker, (non- violent),
the co–worker is the Secondary Source
(57200).
4. If there is an indication that a
condition initiated the fall, that
condition is the Secondary
Source.
o
If the worker got dizzy and fell, the
Secondary Source is 56100, Bodily
conditions of injured, ill worker.
5. Where the fall was initiated by
the collapse of material or
equipment, the material or
equipment is the Secondary
Source.
o
If the worker standing at the foot of the
ladder fell when it struck him as it
collapsed, the ladder is the Secondary
Source (74000).
6. If none of the above guidelines
apply, Secondary Source is
56200, Bodily motion or position
of injured, ill worker
Last Updated: June 9, 2017
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(k) 21000 – 21900: Bodily reaction
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(k) 21000 – 21900
(Bodily reaction)
The object, substance, person or
condition that initiated or caused the
bodily reaction is the Secondary
Source.
Examples
o
If the worker bent to pick up an object
under her desk and got a backache, the
Secondary Source is the object.
GUIDELINES
o
1. Where the bodily reaction was
due to a slip or trip, the object
or substance slipped on or
tripped over is the Secondary
Source.
If the worker tripped on an object and
twisted her ankle, the object is the
Secondary Source.
o
If the worker twisted her ankle on an
uneven floor surface, the floor is the
Secondary Source (62200).
o
If the worker twists an ankle when getting
off, say, a truck or a ladder, the
Secondary Source is the truck or ladder,
providing nothing was slipped on or
tripped over. If yes, code instead for
what was slipped on or tripped over as
instructed by Guideline 1 (priority).
2. If the worker was startled by a
co–worker or a noise, the
Secondary Source is the co–
worker or the noise, providing
nothing was slipped on or
tripped over. If yes, code
instead for what was slipped
on or tripped over as
instructed by Guideline 1.
o
If the worker lost her balance when
startled by a noise, and hurt her back
when straightening up, the Secondary
Source is the noise (93910).
o
But: If the worker was startled by a noise
and she tripped on some debris on the
floor, then twisted her ankle when
straightening up, the debris (95000) is
the Secondary Source – NOT the noise,
as instructed by Guideline 1 (priority).
3. If no object, substance, person
or condition initiated or caused
the bodily reaction, Secondary
Source is 99990.
o
If the worker twisted his ankle while
running or walking, the Secondary
Source is 99990.
NOTE: The source is ALWAYS
56200: Bodily motion or position of
injured, ill worker.
NOTE: An object being carried at
the time a bodily reaction occurs is
not coded unless it directly related
to or contributed to the injury.
Last Updated: June 9, 2017
13
(l) 22000 – 22900: Overexertion
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(l) 22000 – 22900
(Overexertion)
GUIDELINES
1. When force is applied to a
container, and there is an
indication that its contents
contributed to the overexertion
injury, code the contents as
Secondary Source.
2. Where the force is applied to an
object that is not a "true"
container, code the "contents"
or "occupant" as Secondary
Source, if there is an indication
that they contributed to the
overexertion injury.
3. Where a force is applied to an
object or thing (rope, cable,
chain, wire) that is attached or
secured to a normally stationary
object, code the object to which
it is attached as the Secondary
Source.
NOTE: The external object to which
pressure is applied is ALWAYS the
source.
Last Updated: June 9, 2017
Examples
o
If a worker is hurt when lifting a bundle of
siding, the bundle (Source code 13100) is
the Source and the siding (source code
41960) is the Secondary Source.
o
Overexertion from lifting and carrying
crates of fruit. The Source is the crates
(11400) and the fruit is the Secondary
Source (52400).
o
Overexertion to a wheelchair with a
patient in it. The wheelchair is the Source
(79700) and the Secondary Source is the
patient (57300).
o
Overexertion to a stretcher with a patient
in it. The stretcher is the Source (79400)
and the Secondary Source is the patient
(57300).
o
Overexertion to a handtruck transporting
furniture. The handtruck is the Source
(86100) and the Secondary Source is the
furniture (20000).
o
Overexertion from pulling on a rope
holding up a tree. The source is the rope
(42200) and the Secondary Source is the
tree (58700).
o
Overexertion from pulling a chain that is
raising a wall section of a pre–fabricated
building into place. The source is the
chain (42230) and the Secondary Source
is the wall (63700).
This does not apply when the rope, cable,
chain or wire is attached to a normally
mobile object such as a cart or skid, in
which case the rope, etc., can be
considered part of the mobile object.
14
(m) 23000 – 23901: Repetitive motion
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
Examples
(m) 23000 – 23901 GUIDELINES
o
(Repetitive motion)
1. The object, tool, equipment or
material repeatedly being handled
or used is the Secondary Source.
2. If the repetitive motion does not
involve repeated handling or
use of an external object, the
Secondary Source is bodily
motion or position of injured, ill
worker.
If a worker developed CTS from entering
data into a computer, computer keyboard
(36130) is the Secondary Source since it
is an independent part of the computer.
o
Excessive bending, reaching and turning
to remove moulds from moulding machine;
the Secondary Source is the moulds
(44210).
o
Repetitive nature of the motion of
kneeling (that is, the injury results from
the continual up and down motion from
the knees and not from the kneeling
itself) — code the Secondary Source as
Bodily Motion or Position of Injured, Ill
Worker, (56200).
o
Loss of voice or voice disturbances
resulting from constant use of vocal
cords — code the Secondary Source as
56200.
NOTE: Source code 56200: Bodily
motion or position of injured, ill
worker is ALWAYS the Source.
Last Updated: June 9, 2017
15
(n) 31000 – 31900: Contact with electric current
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(n) 31000 – 31900
(Contact with
electric current)
Examples
The object, substance or equipment
that conducted the electricity between
the energized body and the worker is
the Secondary Source.
GUIDELINES
o
Where there was a short circuit in a drill,
and the worker holding the drill received
a shock, the Source is the drill (72130),
and the Secondary Source is 99990.
o
Where a crane contacted an overhead
power line, the power line (44151) is the
Source and the crane is the Secondary
Source (34300).
1. If there is direct contact
between the energized body
and the worker, the energized
body is the Source and
Secondary Source is 99990.
2. If there is indirect contact
between the energized body
and the worker, the object,
substance or equipment that
conducted the electricity
between the energized body
and the worker is the
Secondary Source.
NOTE: The energized body is
ALWAYS the Source.
Last Updated: June 9, 2017
16
(o) 32300 – 32400: Contact with hot or cold objects or substances
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
Examples
(o) 32300 – 32400 The container or equipment that
o
(Contact with hot or contained the hot or cold substance is
cold objects or
the Secondary Source.
substances)
Last Updated: June 9, 2017
If hot soup fell on a waiter, the dish or
bowl containing the soup is the Secondary
Source (14100).
17
(p) 34000 – 34900: Exposure to noxious substances
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(p) 34000 – 34900
(Exposure to
noxious
substances)
Examples
The container, substance, equipment o
or animal/insect that contained,
conveyed, carried or produced the
noxious substance is the Secondary
o
Source.
Chemical escapes from a pressurized
container – the pressurized container
(12000) is the Secondary Source.
Acid splashes from a car battery – the car
battery (48210) is the Secondary Source.
o
Corrosive liquid splashes when draining a
line into a drum – the Secondary Source is
the line (12400).
o
Inhalation of exhaust fumes from forklift
trucks – the Secondary Source is the fork
lift truck (85100).
o
Inhalation of smoke, fire gases from
burning rags – the Secondary Source is
rags (71910).
o
An example of a substance 'carrying' a
noxious substance is bacteria
contaminated water (96210).
Another example is contaminated blood or
other bodily fluids or substances (57100).
Last Updated: June 9, 2017
o
For Event 34000 or from the Event range
34320 – 34390, Venomous bites or stings,
the Secondary Source is the biting or
stinging animal, for example, a snake
(51600) or a rabid dog (51530).
o
Where the Event is 34110, Exposure to
noxious substance in an enclosed,
restricted or confined space, the
Secondary Source is the space.
o
A tank (11800, Tanks, bins, vats) is an
example of a confined space.
18
(q) 35000 – 35200: Exposure to noise
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(q) 35000 – 35200 The object, equipment, tool or
(Exposure to noise) machine, or condition that produced
the noise is the Secondary Source.
Examples
o
NOTE: Noise (93910) is ALWAYS the
o
source.
Last Updated: June 9, 2017
Where the noise is generated by a specific
tool, machine, furnace, etc., that tool,
machine, furnace, etc., is the Secondary
Source.
Where noise is produced by multiple
sources, choose the Secondary Source as
follows:
•
If the noise–producing sources are in
the same group, choose the group
n.e.c. code.
•
If the noise–producing sources are in
different groups in the same major
group, choose the major group n.e.c.
code.
•
If the noise–producing sources are in
different major groups in the same
division, choose the division n.e.c.
code.
•
If the noise–producing sources are in
different divisions, choose 98000,
Other sources, n.e.c. as the Secondary
Source. In most cases, this would be
the Secondary Source for background
noise.
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(r) 36000 – 36900: Exposure to radiation
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(r) 36000 – 36900
(Exposure to
radiation)
Examples
The substance that produced the
o
radiation is Secondary Source, where
it is not the Source.
Last Updated: June 9, 2017
Where a person receives a radiation injury
from a machine such as those that
produce radiation from cobalt, the Source
is the machine (by Source guideline b)
and the Secondary Source is the cobalt
(54290).
20
(s) 41000 – 41300, 42000 – 42200: Collisions of highway and non- highway vehicles
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(s) 41000 – 41300,
42000 – 42200
(Collisions of
highway and nonhighway vehicles)
The object or vehicle collided with is
the Secondary Source.
Examples
o
NOTE: The vehicle in which the
injured person was riding is ALWAYS
o
the Source.
o
Last Updated: June 9, 2017
If the car the injured worker was driving
was hit by a truck, the car is the Source
(82100), and the Secondary Source is the
truck (82500).
If the injured worker was a passenger in a
vehicle which struck a stationary object or
a piece of equipment, the stationary object
or piece of equipment is the Secondary
Source.
If the injured worker was riding a bicycle
which was hit by a car, the Source is the
bicycle (83120) and the Secondary Source
is the car (82100).
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(t) 41400 – 41490, 42300 – 42390: Non-collision vehicle accidents
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(t) 41400 – 41490,
42300 – 42390
(Non-collision
vehicle accidents)
Same rule as (x), i.e. Secondary
Source is any object, person or
substance that directly generated the
Source, or otherwise contributed to
the Event or Exposure.
Examples
o
If the injured worker lost control of his car
when speeding, the injured worker is the
Secondary Source (56900).
o
If ice and snow on the roadway caused a
worker to lose control of her car, the
Secondary Source is snow, sleet, ice
(93730).
NOTE: the vehicle in which the
injured worker was riding is ALWAYS
the Source.
o
NOTE: If the worker is run over by a
trailer being towed by another
vehicle, the other vehicle is the
Secondary Source.
Last Updated: June 9, 2017
If the worker lost control of his car when
he swerved to avoid a stray dog, the dog
is the Secondary Source (51530).
o
If the worker was injured when he was a
passenger in a vehicle that was brought to
either a sudden stop or start, the driver of
the vehicle is the Secondary Source
(57900), unless the sudden stop was
caused by, for example, a stray dog.
o
If the worker was injured when the vehicle
he was riding in hit a pothole or another
small defect in the roadway, the pothole is
the Secondary Source (62300).
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(u) 44000 – 46900: Transportation accident - rail, water, air
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(u) 44000 – 46900
(Transportation
accident - rail,
water, air)
1. COLLISION
Examples
o
The object or vehicle collided with is
the Secondary Source.
When two trains collide, the train in which
the injured worker was riding is the
Source, and the Secondary Source is the
second train (87400 in both cases).
NOTE: The ship, plane or train in
o
which the injured worker was riding is
ALWAYS the Source.
CAUTION (PLANE CRASHES): In the
case of a plane crashing into the ground,
the Secondary Source is 99990, not the
ground.
2. NON–COLLISION
o
If the worker fell from and was struck by
a railway vehicle, the railway vehicle is
the Source and the Secondary Source
(87000). If the worker fell from a railway
vehicle to the ground, (only), the ground
is the Secondary Source (62300).
o
If a worker fell on the deck of a ship,
hitting his head on the floor, the ship is
the Source (88600), and the Secondary
Source is the floor of the deck 62250).
Secondary Source should be the
most direct source of the injury.
Last Updated: June 9, 2017
23
(v) 50000 – 59000: Fire or Explosion
This is explained in the Coding Manual under Event 51*, paragraph 1, also please refer to Event 32* explanation.
If a worker is burned directly by a controlled or intentional heat source (such as stove tops, barbecues), but
nothing caught fire - this should be coded as Event 32300 (Contact with hot objects or substances).
PLEASE NOTE THAT THE TYPE OF INSTRUCTION GIVEN IN RULE (V) FOR CODING IS BASED ON TWO
THINGS, CONCURRENTLY:
1. The Type of Fire, or if an Explosion:

Primary Fire - Means one object or material has caught fire

Primary Explosion - Means one object or material has exploded

Secondary Fire - A secondary material ignites from a first flame source
2. The diagnosis for the claim (Burns, Fracture and burns or Burns and other injuries, vs. any other
diagnosis)
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(V): 50000 – 59000 1. PRIMARY FIRE OR EXPLOSION
(Fire or Explosion)
PRIMARY FIRE - BURN INJURY:
Examples
o
If some flammable rags caught fire
causing burns, Source = 93410, Fire,
flame, Secondary Source = 71910, rags.
Secondary Source = The material
or substance which ignited is the
Secondary Source.
o
If a propane tank exploded and the
worker was burned in the fire which
resulted, the Source = 93410, Fire,
flame, Secondary Source = 08450,
propane.
PRIMARY EXPLOSION - BURN
INJURY:
o
If a propane tank exploded and the
worker was burned in the fire which
resulted, the Source = 93410, Fire,
flame, Secondary Source = 08450,
propane.
o
If a propane tank exploded and part of
the tank hurt the worker, Source = 12900
Tank, and Secondary Source = 08450,
propane.
Source = 93410, Fire, flame
Source = 93410, Fire, flame
Secondary Source = whatever
exploded
PRIMARY EXPLOSION - NOT
BURN INJURY:
Source = whatever directly
produced the injury
Secondary Source = whatever
exploded
Last Updated: June 9, 2017
24
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
2. SECONDARY FIRE CAUSES
BURNS:
In the case of ignition from a
second material from a first flame
source producing the injury, the first
flame source is the Secondary
Source.
Last Updated: June 9, 2017
Examples
o
If flame from a barbecue or stove ignites
a worker's apron, the Secondary Source
is stove (33260), or barbecue (33260).
o
If flames from a car engine which caught
fire ignite a worker's coveralls, 82100 car - is the Secondary Source.
25
(w) 61000 – 69000: Assaults, violent acts, harassment
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
(w) 61000 – 69000
(Assaults, violent
acts, harassment)
The person who commits the assault
or violent act, or carries out or is
suspected of carrying out the act of
terrorism, if not identified as the
Source, is the Secondary Source.
NOTE: In the case of threats, verbal
assaults, harassment and exposure
to job-related stress, with no
threatening/dangerous object directly
involved, the person who made the
threat, committed the verbal assault
or harassment, or brought about or
exacerbated the job related stress is
the Source.
In all cases where the perpetrator is
identified as the Source, the
Secondary Source is Unknown
(99990).
Examples
o
In the case of ANY assault on a worker by
a handgun (or other
threatening/dangerous object), the
handgun (79310), or the object, is always
the Source (regardless of whether the
worker was threatened with the handgun/
object, shot or pistol–whipped, for
example), and the person holding the
handgun/object, is the Secondary Source.
o
In the case of anthrax sent through the
mail, the Source is anthrax and the
Secondary Source is Person – other than
injured or ill worker, UNS or NEC,
depending upon what is known about the
event.
EXCEPTION: In the case of threats,
verbal assaults, harassment involving
a weapon (e.g. handgun or other
threatening/dangerous object), the
weapon is the Source and the person
who made the verbal threat,
committed the verbal assault or
harassment with a weapon is the
Secondary Source.
Last Updated: June 9, 2017
26
(x) All other Event or Exposure Codes:
00000; 04000 – 05200; 05900 – 10000; 19000; 20000; 24000 – 30000; 32000 – 32200; 32900; 33000 – 33900;
37000 – 40000; 41900; 42900 – 43300; 43900; 49000; 60000; 90000 – 90090
Event or Exposure Rule to determine what is coded
code selected
as the Secondary Source
Examples
(x) All other Event The Secondary Source is any object, o
or Exposure Codes: person or substance that directly
generated the Source, or otherwise
00000
contributed to the Event or Exposure.
04000 – 05200
Event Codes in Major Group 04*: In the
case of bulk material entering a silo or bin
from an unblocked supply line, the Source
is the bulk material, and the Secondary
Source is the supply line.
05900 – 10000
o
Event Code 05100: In the case of injuries
resulting from kneeling on the floor, the
floor is the Source (62200) and the
Secondary Source is bodily motion or
position of injured, ill worker (56200).
o
Event Codes in Major Group 06*: In the
case of injuries resulting from prolonged
vibration in long distance driving over
rough terrain, the Source is the vehicle
(80000) and the Secondary Source is the
ground (62300).
o
Event Code 24000: In case of prolonged
viewing of a computer screen, the Source
is bodily motion or position of injured, ill
worker (56200), and the Secondary
Source is the computer screen (36110), or
the object being viewed.
o
Event Code 29000, 29001: In the case of
injuries resulting from both overexertion
and bodily reaction, the Source is the
external object to which pressure is
applied or which exerted pressure, and the
Secondary Source is bodily motion or
position of injured, ill worker (Source Code
56200).
o
Event Code 32100: In the case of heat
exhaustion from working in the sun all day,
the Source is the sun (93920), and the
Secondary Source is Unknown (99990).
19000
20000
24000 – 30000
32000 – 32200
32900
33000 – 33900
37000 – 40000
41900
42900 – 43300
43900
49000
60000
90000 – 90090
Last Updated: June 9, 2017
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