ICD-10-CM 2027 diagnosis code
W94.22XSExposure to reduction in atmospheric pressure while surfacing from underground, sequela
W94.22XS is a valid, billable ICD-10-CM code for exposure to reduction in atmospheric pressure while surfacing from underground, sequela. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Expsr to rdct in atmos pressr wh surfc fr underground, sqla
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 W94.22XS
W94.22XS is the ICD-10-CM diagnosis code for exposure to reduction in atmospheric pressure while surfacing from underground, sequela. It belongs to category W94 (exposure to high and low air pressure and changes in air pressure), block W85-W99 (exposure to electric current, radiation and extreme ambient air temperature and pressure) 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 E929.5 (late effects of accident due to natural and environmental factors).
7th character
Ssequela
Other encounter types for W94.22:
Notes that apply from higher levels
Instructions written at a parent level also apply to W94.22XS.
Broader instructions also apply from W85-W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure and Chapter 20: External causes of morbidity.
ICD-9-CM equivalent
Converter →- E929.5Late effects of accident due to natural and environmental factorsapproximate
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 W94.22XS
Is W94.22XS billable?
- Yes. W94.22XS 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 W94.22XS 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 W94.22XS be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict W94.22XS as a principal diagnosis.
Is W94.22XS a CC or MCC?
- No. W94.22XS is neither a CC nor an MCC under MS-DRG v44.0.
What is the ICD-9 code for W94.22XS?
- The CMS General Equivalence Mappings map W94.22XS to ICD-9-CM E929.5.