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Matrix of E-code Groupings

Table 1. Recommended framework of E-code groupings for presenting injury mortality and morbidity data (August 10, 2011)

This matrix contains the ICD-9 external-cause-of-injury codes used for coding of injury mortality data and additional ICD-9-CM external-cause-of-injury codes, designated in bold, only used for coding of injury morbidity data. In addition, a list of ICD-9-CM external-cause-of-injury codes that have been added since 1994 along with their descriptors is appended to the matrix.

Mechanism/Cause

Manner/Intent

UnintentionalSelf-inflictedAssaultUndeterminedOther1
Cut/pierceE920.0-.9E956E966E986E974. E995.2
Drowning/submersionE830.0-.9, E832.0-.9
E910.0-.9
E954E964E984E995.4
FallE880.0-E886.9, E888E957.0-.9E968.1E987.0-.9
Fire/burn3E890.0-E899, E924.0-.9E958.1,.2,.7E961, E968.0,.3, E979.3E988.1,.2,.7
Fire/flame3E890.0-E899E958.1E968.0, E979.3E988.1
Hot object/substanceE924.0-.9E958.2,.7E961, E968.3E988.2,.7
Firearm3E922.0-.3,.8, .9E955.0-.4E965.0-4, E979.4E985.0-.4E970
MachineryE919 (.0-.9)
Motor vehicle traffic2,3E810-E819 (.0-.9)E958.5E968.5E988.5
OccupantE810-E819 (.0,.1)
MotorcyclistE810-E819 (.2,.3)
Pedal cyclistE810-E819 (.6)
PedestrianE810-E819 (.7)
UnspecifiedE810-E819 (.9)
Pedal cyclist, otherE800-E807 (.3)
E820-E825 (.6), E826.1,.9
E827-E829(.1)
Pedestrian, otherE800-807(.2)
E820-E825(.7)
E826-E829(.0)
Transport, otherE800-E807 (.0,.1,.8,.9)
E820-E825 (.0-.5,.8,.9)
E826.2-.8
E827-E829 (.2-.9),
E831.0-.9, E833.0-E845.9
E958.6E988.6
Natural/environmentalE900.0-E909, E928.0-.2E958.3E988.3
Bites and stings3E905.0-.6,.9
E906.0-.4,.5,.9
OverexertionE927.0-.4,.8-.9
PoisoningE850.0-E869.9E950.0-E952.9E962.0-.9, E979.6,.7E980.0-E982.9E972
Struck by, againstE916-E917.9E960.0; E968.2E973, E975, E995 (.0,.1)
SuffocationE911-E913.9E953.0-.9E963E983.0-.9E995.3
Other specified and
classifiable
3,4
E846-E848, E914-E915
E918, E921.0-.9, E922.4,.5
E923.0-.9, E925.0-E926.9
E928(.3-.7), E929.0-.5
E955.5,.6,.7,.9
E958.0,.4
E960.1, E965.5-.9
E967.0-.9,
E968.4,.6, .7
E979 (.0-.2,.5,.8,.9)
E985.5,.6,.7
E988.0,.4
E971, E978,
E990-E994, E996
E997.0-.2
Other specified, not
elsewhere classifiable
E928.8, E929.8E958.8, E959E968.8, E969,E999.1E988.8, E989E977, E995 (.8,.9), E997.8
E998, E999.0
UnspecifiedE887, E928.9, E929.9E958.9E968.9E988.9E976, E997.9
All injury3E800-E869, E880-E929E950-E959E960-E969, E979,E999.1E980-E989E970-E978, E990-E999.0
Adverse effectsE870-E879
E930.0-E949.9
Medical careE870-E879
DrugsE930.0-E949.9
All external causesE800-E999

1Includes legal intervention (E970-E978) and operations of war (E990-E999).
2Three 4th-digit codes (.4 [occupant of streetcar], .5 [rider of animal], .8 [other specified person]) are not presented separately because of small numbers. However, because they are included in the overall motor vehicle traffic category, the sum of these categories can be derived by subtraction.
3Codes in bold are for morbidity coding only. For details see table 2.
4E849 (place of occurrence) has been excluded from the matrix. For mortality coding, an ICD-9 E849 code does not exist. For morbidity coding, an ICD-9-CM E849 code should never be first-listed E code and should only appear as an additional code to specify the place of occurrence of the injury incident.

Note: ICD-9 E codes for coding underlying cause of death apply to injury-related death data from 1979 through 1998. Then there is a new ICD-10 external cause of injury matrix that applies to death data from 1999 and after. This can be found on the National Center for Health Statistics website.

About the framework.

ICD-10 External-Cause-of-Injury-Code Matrix for Presenting Injury Mortality Data (NCHS)

Table 2. New ICD-9-CM external-cause-of-injury codes (E-codes) implemented by year since October 1994

YearE-codeDescription
1994

E869.4Accidental poisoning by second-hand tobacco smoke
1995

E854.8Accidental poisoning by other psychotropic agents
1995

E880.1Fall on or from sidewalk curb
1995

E884.2Fall from chair
1995E884.3Fall from wheelchair
1995

E884.4Fall from bed
1995

E884.5Fall from other furniture
1995

E884.6Fall from commode
1995E906.5Bite from unspecified animal
1995E908.0Hurricane
1995E908.1Tornado
1995E908.2Floods
1995E908.3Blizzard
1995E908.4Dust storm
1995E908.8Other cataclysmic storms
1995E908.9Unspecified cataclysmic storms
1995E909.0External cause of injury due to earthquakes
1995E909.1External cause of injury due to volcanic eruptions
1995E909.2External cause of injury due to avalanche, landslide or mudslide
1995E909.3External cause of injury due to collapse of dam or man-made structure
1995E909.4External cause of injury due to tidal wave caused by earthquake
1995E909.8Other cataclysmic earth surface movements and eruptions
1995E909.9Unspecified cataclysmic earth surface movements and eruptions
1995E920.5Accidents caused by hypodermic needle
1995E924.2Accident caused by hot (boiling) tap water
1995E968.5Assault by transport vehicle
1996E967.2Battering and other maltreatment by mother or stepmother
1996E967.3Battering and other maltreatment by spouse or partner
1996E967.4Battering and other maltreatment by child
1996E967.5Battering and other maltreatment by sibling
1996E967.6Battering and other maltreatment by grandparent
1996E967.7Battering and other maltreatment by other relative
1996E967.8Battering and other maltreatment by non-related caregiver
1997E922.4Unintentional injury (gunshot wound) with BB/pellet gun
1997E955.6Suicide attempt/intentionally self-inflicted with BB/pellet gun
1997E968.6Assault with BB/pellet gun
1997E985.6Undetermined intent injury (gunshot wound) with BB/pellet gun
2000E885.1Fall from roller skates/inline skates
2000E885.2Fall from skateboard
2000E885.3Fall from skis
2000E885.4Fall from snowboard
2000E885.9Fall from other slipping, tripping, or stumbling (including fall from moving sidewalk, fall from or in stationary motor vehicle, tripping or falling over an animal, stumbling over object)
2000E928.3Human bite (unintentional)
2000E968.7Human bite (assault)
2001E888.0Fall resulting in striking against sharp object (use additional e code to identify object (E920)
2001E888.1Fall resulting in striking against other object
2001E888.8Other fall
2001E888.9Unspecified fall (Fall NOS)
2001E917.0Striking against in sports without subsequent fall (revised)
2001(revised)E917.1Striking against caused by collective fear or panic without subsequent fall
2001(revised)E917.2Striking against in running water without subsequent fall drowning or submersion...that in sports)
2001E917.3Striking against furniture without subsequent fall (excludes fall from furniture)
2001E917.4Striking against other stationary object without subsequent fall(includes bath tub, fence, lamp-post)
2001E917.5Striking against object in sports with subsequent fall (including knocked down while boxing)
2001E917.6Striking against or struck by caused by a crowd, by collective fear or panic with subsequent fall)
2001E917.7Striking against furniture with subsequent fall
2001E917.8Striking against stationary object with subsequent fall
2001(revised)E917.9Other striking against with or without subsequent fall
2002E885.0Fall from (non-motorized) scooter
2002E922.5Paintball gun (unintentional)
2002E955.7Paintball gun (suicide or intentional self-harm)
2002E985.7Paintball gun (undetermined intent)
2002E979.0Terrorism involving explosion of marine weapons
2002E979.1Terrorism involving destruction of aircraft
2002E979.2Terrorism involving other explosions and fragments
2002E979.3Terrorism involving fires, conflagration and hot substances
2002E979.4Terrorism involving firearms
2002E979.5Terrorism involving nuclear weapons
2002E979.6Terrorism involving biological weapons
2002E979.7Terrorism involving chemical weapons
2002E979.8Terrorism involving other means
2002E979.9Terrorism, secondary effects
2002E999.0Late effect of injury due to war operations
2002E999.1Late effect of injury due to terrorism
2003E928.4External constriction caused by hair
2003E928.5External constriction caused by other object
2007E933.6Oral bisphosphonates
2007E933.7Intravenous bisphosphonates
2008E927.0Overexertion from sudden strenuous movement
2008E927.1Overexertion from prolonged static position
2008E927.2Excessive physical exertion from prolonged activity
2008E927.4Cumulative trauma from repetitive motion
2008E927.4Cumulative trauma from repetitive impact
2008E927.8Other overexertion and strenuous and repetitive movements or loads
2008E927.9Unspecified overexertion and strenuous and repetitive movements or loads
2008E928.6Environmental exposure to harmful algae and toxins
2009E830-E838 (.7)Occupant of military watercraft, any type
2009E928.7Mechanism or component of firearm and air gun
2009E990.0Injury due to war operations by fires and conflagration from gasoline bomb
2009E990.1Injury due to war operations by fires and conflagration from flame thrower
2009E990.2Injury due to war operations by fires and conflagration from incendiary bullet
2009E990.3Injury due to war operations by fires and conflagration from fire caused indirectly from conventional weapon
2009E991.4Injury due to war operations by bullets and fragments from munitions
2009E991.5Injury due to war operations by bullets and fragments from person-borne improvised explosive device [IED]
2009E991.6Injury due to war operations by bullets and fragments from vehicle-borne improvised explosive device [IED]
2009E991.7Injury due to war operations by bullets and fragments from other improvised explosive device [IED]
2009E991.8Injury due to war operations by bullets and fragments from weapons
2009E991.9Injury due to war operations by bullets and fragments from other/unspecified fragments
2009E992.0Injury due to war operations by explosion of marine weapons - Torpedo
2009E992.1Injury due to war operations by explosion of marine weapons – Depth charge
2009E992.2Injury due to war operations by explosion of marine weapons – Marine mines
2009E992.3Injury due to war operations by explosion of marine weapons – Sea-based artillery shell
2009E992.8Injury due to war operations by explosion of marine weapons – Other marine weapons
2009E992.9Injury due to war operations by explosion of marine weapons – Unspecified marine weapon
2009E993.0Injury due to war operations by other explosion – Aerial bomb
2009E993.1Injury due to war operations by other explosion – Guided missile
2009E993.2Injury due to war operations by other explosion – Mortar
2009E993.3Injury due to war operations by other explosion – Person-borne improvised explosive device [IED]
2009E993.4Injury due to war operations by other explosion – Vehicle-borne improvised explosive device [IED]
2009E993.5Injury due to war operations by other explosion – Other improvised explosive device [IED]
2009E993.6Injury due to war operations by other explosion – Unintentional detonation of own munitions
2009E993.7Injury due to war operations by other explosion – Unintentional discharge of own munitions launch device
2009E993.8Injury due to war operations by other explosion – Other specified explosion
2009E993.9Injury due to war operations by other explosion – Unspecified explosion
2009E994.0Injury due to war operations by destruction of aircraft – due to enemy fire or explosives
2009E994.1Injury due to war operations by destruction of aircraft – Unintentional due to own onboard explosives
2009E994.2Injury due to war operations by destruction of aircraft – due to collisions with other aircraft
2009E994.3Injury due to war operations by destruction of aircraft – due to onboard fire
2009E994.8Injury due to war operations by destruction of aircraft – Other
2009E994.9Injury due to war operations by destruction of aircraft – Unspecified
2009E995.0Injury due to war operations by other and unspecified forms of convention warfare – Unarmed hand-to-hand combat
2009E995.1Injury due to war operations by other and unspecified forms of convention warfare – Struck by blunt object
2009E995.2Injury due to war operations by other and unspecified forms of convention warfare – Piercing object
2009E995.3Injury due to war operations by other and unspecified forms of convention warfare – Intentional restriction of air and airway
2009E995.4Injury due to war operations by other and unspecified forms of convention warfare – Unintentional drowning due to inability to surface or obtain air
2009E995.8Injury due to war operations by other and unspecified forms of convention warfare – Other forms of conventional warfare
2009E995.9Injury due to war operations by other and unspecified forms of convention warfare – Unspecified form of conventional warfare
2009E996.0Injury due to war operations by nuclear weapon – Direct blast effect
2009E996.1Injury due to war operations by nuclear weapon – Indirect blast effect
2009E996.2Injury due to war operations by nuclear weapon – Thermal radiation effects
2009E996.3Injury due to war operations by nuclear weapon – Nuclear radiation effects
2009E996.8Injury due to war operations by nuclear weapon – Other effects
2009E996.9Injury due to war operations by nuclear weapon – Unspecified effects
2009E997.3Injury due to war operations by other forms of conventional warfare – Weapon of mass destruction [WMD], unspecified
2009E998.0Injury due to war operations but occurring after cessation of hostilities – Explosion of mines
2009E998.1Injury due to war operations but occurring after cessation of hostilities – Explosion of bombs
2009E998.8Injury due to war operations but occurring after cessation of hostilities – Other
2009E998.9Injury due to war operations but occurring after cessation of hostilities – Unspecified

Important Note: New E codes and revised E codes were implemented in October of each year listed. In most instances, the expanded categories (i.e., adding a new fourth digit) were previously classified in other more broadly defined E codes. Expansions of these categories allow data capture at a detailed level. A major change was made on October 1, 2001 to help classify cases that involve "a fall followed by a struck by/against" and "a struck by/against followed by a fall." This brought about major revisions to inclusion and exclusion criteria for E888 and E917 codes. The new codes and revised E888 and E917 codes are listed above. Note that E917.1, E917.2 and E917.9 have substantially revised definitions. On October 1, 2002, E codes were added to capture “fall (non-motorized) scooter” and to capture injuries associated with paintball guns. Note that there is not a new specific code for paintball gun assault. This is because there were no more available assault codes at the 4th digit. Also, terrorism codes were added. On October 1, 2003, E928.4 (i.e., external constriction caused by hair) was added to capture injuries, particularly in infants, where the hair on a finger or toe can lead to circulation problems and possibly gangrene. Also, E928.5 (i.e., external constriction caused by other object) was added to capture injuries due to other objects, such as a wedding ring that may become imbedded in skin. This is sometimes seen in cases where someone gained weight and didn't remove a ring from their finger.

On October 1, 2013, ICD-10-CM will be implemented in the United States for classification and coding of morbidity data. CDC is working on developing a new external-cause-of-injury matrix and crosswalk from ICD-9-CM to ICD-10-CM. This is a challenging effort because of much more specificity and many more codes in ICD-10-CM compared to ICD-9-CM. For example, ICD-9-CM has about 14,000 codes compared to ICD-10-CM which has about 68,000 codes (i.e., including diagnosis and external cause codes). Also, ICD-10-CM does not include external cause codes for most poisonings and toxic effects. Poisoning and toxic effects are specified using T codes with intent indicated using an addition digit on the code. (If you want to explore the new ICD-10-CM code sets, go to www.cdc.gov/nchs/icd/icd10cm.htm.) This was done in order to provide much more specificity about the substance involved in a poisoning incident. The new ICD-10-CM will go through extensive review prior to release so it will not be ready for a year or so. CDC will keep our partners and colleagues informed regarding progress toward completing this task.

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