ICD-10-CM 2027 diagnosis code
X73.9XXSIntentional self-harm by unspecified larger firearm discharge, sequela
X73.9XXS is a valid, billable ICD-10-CM code for intentional self-harm by unspecified larger firearm discharge, sequela. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Self-harm by unsp larger firearm discharge, sequela
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About X73.9XXS
X73.9XXS is the ICD-10-CM diagnosis code for intentional self-harm by unspecified larger firearm discharge, sequela. It belongs to category X73 (intentional self-harm by rifle, shotgun and larger firearm discharge), block X71-X83 (intentional self-harm) and chapter 20 (external causes of morbidity). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
The 7th character "S" means sequela: use it for complications or conditions that arise as a direct result of the original condition.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as E959 (late effects of self-inflicted injury).
7th character
Ssequela
Other encounter types for X73.9:
Notes that apply from higher levels
Instructions written at a parent level also apply to X73.9XXS.
› From X73 Intentional self-harm by rifle, shotgun and larger firearm discharge
- airgun (X74.01)
Broader instructions also apply from X71-X83 Intentional self-harm and Chapter 20: External causes of morbidity.
ICD-9-CM equivalent
Converter →- E959Late effects of self-inflicted injuryapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about X73.9XXS
Is X73.9XXS billable?
- Yes. X73.9XXS is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "S" at the end of X73.9XXS mean?
- It is the 7th character for sequela. Per the official guidelines, use it for complications or conditions that arise as a direct result of the original condition.
Can X73.9XXS be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict X73.9XXS as a principal diagnosis.
Is X73.9XXS a CC or MCC?
- No. X73.9XXS is neither a CC nor an MCC under MS-DRG v44.0.
What is the ICD-9 code for X73.9XXS?
- The CMS General Equivalence Mappings map X73.9XXS to ICD-9-CM E959.