Rifle, shotgun and larger firearm discharge, undetermined intent
In Event of undetermined intent (Y21-Y33), chapter 20: External Causes of Morbidity
18 billable codes under Y23: none are a CC or MCC; none map to an HCC.
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Instructional notes
Excludes2: not included here, code separately if applicable
- airgun (Y24.0)
Also applies, from Event of undetermined intent (Y21-Y33)
These notes sit on Y21-Y33 and apply to every code under it, including Y23.
Includes: conditions that are coded here
- Undetermined intent is only for use when there is specific documentation in the record that the intent of the injury cannot be determined. If no such documentation is present, code to accidental (unintentional)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers how to report external cause codes (V00-Y99) describing cause, intent, place, activity, and status. They are never principal or first-listed, and reporting is voluntary unless required.
- General External Cause Coding Guidelines (page 88)
- Place of Occurrence Guideline (page 89)
- Activity Code (page 89)
- Place of Occurrence, Activity, and Status Codes Used with other External Cause Code (page 89)
- If the Reporting Format Limits the Number of External Cause Codes (page 90)
- Multiple External Cause Coding Guidelines (page 90)
- Child and Adult Abuse Guideline (page 90)
- Unknown or Undetermined Intent Guideline (page 91)
All codes under Y23
Y23 can't be used on a claim. Pick a billable code below; grey headings group them.
- Y23.0Shotgun discharge, undetermined intent
- Y23.0XXAShotgun discharge, undetermined intent, initial encounter
- Y23.0XXDShotgun discharge, undetermined intent, subsequent encounter
- Y23.0XXSShotgun discharge, undetermined intent, sequela
- Y23.1Hunting rifle discharge, undetermined intent
- Y23.1XXAHunting rifle discharge, undetermined intent, initial encounter
- Y23.1XXDHunting rifle discharge, undetermined intent, subsequent encounter
- Y23.1XXSHunting rifle discharge, undetermined intent, sequela
- Y23.2Military firearm discharge, undetermined intent
- Y23.2XXAMilitary firearm discharge, undetermined intent, initial encounter
- Y23.2XXDMilitary firearm discharge, undetermined intent, subsequent encounter
- Y23.2XXSMilitary firearm discharge, undetermined intent, sequela
- Y23.3Machine gun discharge, undetermined intent
- Y23.3XXAMachine gun discharge, undetermined intent, initial encounter
- Y23.3XXDMachine gun discharge, undetermined intent, subsequent encounter
- Y23.3XXSMachine gun discharge, undetermined intent, sequela
- Y23.8Other larger firearm discharge, undetermined intent
- Y23.8XXAOther larger firearm discharge, undetermined intent, initial encounter
- Y23.8XXDOther larger firearm discharge, undetermined intent, subsequent encounter
- Y23.8XXSOther larger firearm discharge, undetermined intent, sequela
- Y23.9Unspecified larger firearm discharge, undetermined intent
- Y23.9XXAUnspecified larger firearm discharge, undetermined intent, initial encounter
- Y23.9XXDUnspecified larger firearm discharge, undetermined intent, subsequent encounter
- Y23.9XXSUnspecified larger firearm discharge, undetermined intent, sequela
Y23 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Code history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.