ICD-10-CM 2027 diagnosis code
W36.9XXAExplosion and rupture of unspecified gas cylinder, initial encounter
W36.9XXA is a valid, billable ICD-10-CM code for explosion and rupture of unspecified gas cylinder, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Explosion and rupture of unsp gas cylinder, init encntr
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 W36.9XXA
W36.9XXA is the ICD-10-CM diagnosis code for explosion and rupture of unspecified gas cylinder, initial encounter. It belongs to category W36 (explosion and rupture of gas cylinder), block W20-W49 (exposure to inanimate mechanical forces) 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 "A" means initial encounter: use it while the patient is receiving active treatment for the 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 E921.1 (accident caused by explosion of gas cylinders).
7th character
Ainitial encounter
Other encounter types for W36.9:
Notes that apply from higher levels
Instructions written at a parent level also apply to W36.9XXA.
Broader instructions also apply from W20-W49 Exposure to inanimate mechanical forces and Chapter 20: External causes of morbidity.
ICD-9-CM equivalent
Converter →- E921.1Accident caused by explosion of gas cylindersapproximate
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 W36.9XXA
Is W36.9XXA billable?
- Yes. W36.9XXA is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "A" at the end of W36.9XXA mean?
- It is the 7th character for initial encounter. Per the official guidelines, use it while the patient is receiving active treatment for the condition.
Can W36.9XXA be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict W36.9XXA as a principal diagnosis.
Is W36.9XXA a CC or MCC?
- No. W36.9XXA is neither a CC nor an MCC under MS-DRG v44.0.
What is the ICD-9 code for W36.9XXA?
- The CMS General Equivalence Mappings map W36.9XXA to ICD-9-CM E921.1.