Y23.9XXS — Unspecified larger firearm discharge, undetermined intent, sequela
Is Y23.9XXS billable?
Yes, but Y23.9XXS is an unspecified code. Y23.9XXS is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Y23.9XXS is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Y23.9XXS — the more specific alternatives are listed below.
More specific alternatives
- Y23.0XXSShotgun discharge, undetermined intent, sequela
- Y23.1XXSHunting rifle discharge, undetermined intent, sequela
- Y23.2XXSMilitary firearm discharge, undetermined intent, sequela
- Y23.3XXSMachine gun discharge, undetermined intent, sequela
- Y23.8XXSOther larger firearm discharge, undetermined intent, sequela
Y23.9XXS at a glance
| Code | Y23.9XXS |
|---|---|
| Description | Unspecified larger firearm discharge, undetermined intent, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in Y23.9XXS?
In Y23.9XXS, the 7th character S means sequela. The 7th character is required for Y23.9XXS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is Y23.9XXS listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under Y23.9, the nearest indexed parent of Y23.9XXS. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Discharge › firearm › larger (accidental)
- Undetermined intent › firearm discharge › larger (contact) (exposure)
- Discharge › firearm › larger › stated as undetermined whether accidental or intentional (accidental)
Excludes2 — not included here — inherited from Y23
The conditions below are not part of Y23.9XXS, but a patient may have both at the same time. When documentation supports it, Y23.9XXS and the excluded code may both be reported.
- airgun (Y24.0)
How long has Y23.9XXS existed?
Y23.9XXS has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.