Rifle, shotgun and larger firearm discharge, undetermined intent (Y23) ICD-10-CM
The Y23 code range covers rifle, shotgun and larger firearm discharge, undetermined intent with 25 ICD-10-CM diagnosis codes. 18 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, 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, when appropriate.
- airgun Y24.0
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 Y23
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the Y23 Range 25 codes · 18 billable
- Y23 Rifle, shotgun and larger firearm discharge, undetermined intentNon-billable
- Y23.0 Shotgun discharge, undetermined intentNon-billable
- Y23.0XXA Shotgun discharge, undetermined intent, initial encounter
- Y23.0XXD Shotgun discharge, undetermined intent, subsequent encounter
- Y23.0XXS Shotgun discharge, undetermined intent, sequela
- Y23.1 Hunting rifle discharge, undetermined intentNon-billable
- Y23.1XXA Hunting rifle discharge, undetermined intent, initial encounter
- Y23.1XXD Hunting rifle discharge, undetermined intent, subsequent encounter
- Y23.1XXS Hunting rifle discharge, undetermined intent, sequela
- Y23.2 Military firearm discharge, undetermined intentNon-billable
- Y23.2XXA Military firearm discharge, undetermined intent, initial encounter
- Y23.2XXD Military firearm discharge, undetermined intent, subsequent encounter
- Y23.2XXS Military firearm discharge, undetermined intent, sequela
- Y23.3 Machine gun discharge, undetermined intentNon-billable
- Y23.3XXA Machine gun discharge, undetermined intent, initial encounter
- Y23.3XXD Machine gun discharge, undetermined intent, subsequent encounter
- Y23.3XXS Machine gun discharge, undetermined intent, sequela
- Y23.8 Other larger firearm discharge, undetermined intentNon-billable
- Y23.8XXA Other larger firearm discharge, undetermined intent, initial encounter
- Y23.8XXD Other larger firearm discharge, undetermined intent, subsequent encounter
- Y23.8XXS Other larger firearm discharge, undetermined intent, sequela
- Y23.9 Unspecified larger firearm discharge, undetermined intentNon-billable
- Y23.9XXA Unspecified larger firearm discharge, undetermined intent, initial encounter
- Y23.9XXD Unspecified larger firearm discharge, undetermined intent, subsequent encounter
- Y23.9XXS Unspecified larger firearm discharge, undetermined intent, sequela
About the Y23 Code Range
These events involve a shotgun, rifle, or larger firearm being discharged when the intent is undetermined.
The subdivisions distinguish shotgun Y23.0, hunting rifle Y23.1, military firearm Y23.2, and machine gun Y23.3 discharges. They also distinguish other larger firearms Y23.8 from unspecified larger firearms Y23.9.
The final character identifies an initial encounter (A), subsequent encounter (D), or sequela (S), a later effect.
Questions About This Page
How many billable codes are in the Y23 range?
Of the 25 codes in this range, 18 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the Y23 range classify?
The range classifies rifle, shotgun and larger firearm discharge, undetermined intent. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
