External causes of morbidity - External cause codes are intended to provide data for injury research and evaluation of injury prevention strategies. The external causes of morbidity codes should never be sequenced as the first-listed or principal diagnosis.
Find your ICD-10-CM code by first selecting the most applicable chapter
- External cause codes are intended to provide data for injury research and evaluation of injury prevention strategies. The external causes of morbidity codes should never be sequenced as the first-listed or principal diagnosis.
Note: This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.
Note: Codes from this category are for use only in cases of confirmed abuse (T74.-)
Selection of the correct perpetrator code is based on the relationship between the perpetrator and the victim
Y83-Y84- Surgical and other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
These categories may be used to provide supplementary information concerning causes of morbidity. They are not to be used for single-condition coding.
Note: Category Y93 is provided for use to indicate the activity of the person seeking healthcare for an injury or health condition, such as a heart attack while shoveling snow, which resulted from, or was contributed to, by the activity. These codes are appropriate for use for both acute injuries, such as those from chapter 19, and conditions that are due to the long-term, cumulative effects of an activity, such as those from chapter 13. They are also appropriate for use with external cause codes for cause and intent if identifying the activity provides additional information on the event. These codes should be used in conjunction with codes for external cause status (Y99) and place of occurrence (Y92).
This section contains the following broad activity categories:
Y93.0 Activities involving walking and running
Y93.1 Activities involving water and water craft
Y93.2 Activities involving ice and snow
Y93.3 Activities involving climbing, rappelling, and jumping off
Y93.4 Activities involving dancing and other rhythmic movement
Y93.5 Activities involving other sports and athletics played individually
Y93.6 Activities involving other sports and athletics played as a team or group
Y93.7 Activities involving other specified sports and athletics
Y93.A Activities involving other cardiorespiratory exercise
Y93.B Activities involving other muscle strengthening exercises
Y93.C Activities involving computer technology and electronic devices
Y93.D Activities involving arts and handcrafts
Y93.E Activities involving personal hygiene and interior property and clothing maintenance
Y93.F Activities involving caregiving
Y93.G Activities involving food preparation, cooking and grilling
Y93.H Activities involving exterior property and land maintenance, building and construction
Y93.I Activities involving roller coasters and other types of external motion
Y93.J Activities involving playing musical instrument
Y93.K Activities involving animal care
Y93.8 Activities, other specified
Y93.9 Activity, unspecified
Note: A single code from category Y99 should be used in conjunction with the external cause code(s) assigned to a record to indicate the status of the person at the time the event occurred.
This note further define, or give examples of, the content of the code or category.
List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of “other specified” codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first, if applicable, followed by the manifestation. Wherever such a combination exists, there is a “use additional code” note at the etiology code, and a “code first” note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 Excludes note is a pure excludes. It means 'NOT CODED HERE!' An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 Excludes note represents 'Not included here'. An Excludes2 note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When an Excludes2 note appears under a code it is acceptable to use both the code and the excluded code together.
A “code also” note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction. The sequencing depends on the circumstances of the encounter.