Other and unspecified firearm discharge, undetermined intent (Y24)
The ICD-10 code Y24 identifies injuries caused by firearm discharges where the intent is undetermined, covering airguns, other firearms, and unspecified types. These codes are used when available information does not clarify whether the firearm injury was accidental, self-inflicted, or inflicted by another person.
This section includes specific codes for airgun discharges (Y24.0), other firearm discharges (Y24.8), and unspecified firearm discharges (Y24.9) all with undetermined intent. Each of these category codes further breaks down by encounter type: initial, subsequent, or sequela (complications or conditions resulting from prior injury). For example, Y24.8XXA pertains to an initial encounter for injury caused by "injury of unknown intent by firearms and explosives," assisting coders when the cause is unclear. The unspecified firearm codes (Y24.9) have extensive synonyms that include various gunshot wound locations, supporting medical coders in matching common injury descriptions; such as "gunshot wound of right thigh"; to the correct ICD-10 code. Overall, the Y24 codes streamline documentation of firearm-related injuries when the motivation or intent cannot be determined.
External causes of morbidity and mortality (V01–Y99)
Event of undetermined intent (Y21-Y33)
Y24 Other and unspecified firearm discharge, undetermined intent
Y24.0 Airgun discharge, undetermined intent
- Y24.0XXA Airgun discharge, undetermined intent, initial encounter
- Y24.0XXD Airgun discharge, undetermined intent, subsequent encounter
- Y24.0XXS Airgun discharge, undetermined intent, sequela
Y24.8 Other firearm discharge, undetermined intent
- Y24.8XXA Other firearm discharge, undetermined intent, initial encounter
- Y24.8XXD Other firearm discharge, undetermined intent, subsequent encounter
- Y24.8XXS Other firearm discharge, undetermined intent, sequela
Y24.9 Unspecified firearm discharge, undetermined intent
- Y24.9XXA Unspecified firearm discharge, undetermined intent, initial encounter
- Y24.9XXD Unspecified firearm discharge, undetermined intent, subsequent encounter
- Y24.9XXS Unspecified firearm discharge, undetermined intent, sequela
Other and unspecified firearm discharge, undetermined intent (Y24)
Instructional Notations
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category Y24
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
