W94Header code — not billable
Exposure to high and low air pressure and changes in air pressure
Short description: Expsr to high and low air pressr and changes in air pressure
- Chapter
- 20. External causes of morbidity
- Category
- W94
- Effective date
- October 1, 2026
Related codes in category W94
W94.0Exposure to prolonged high air pressureW94.0XXAExposure to prolonged high air pressure, initial encounterYesW94.0XXDExposure to prolonged high air pressure, subs encntrYesW94.0XXSExposure to prolonged high air pressure, sequelaYesW94.1Exposure to prolonged low air pressureW94.11Exposure to residence or prolonged visit at high altitudeW94.11XAExpsr to resdnce or prolonged visit at high altitude, initYesW94.11XDExpsr to resdnce or prolonged visit at high altitude, subsYesW94.11XSExpsr to resdnce or prolonged visit at high altitude, sqlaYesW94.12Exposure to other prolonged low air pressureW94.12XAExposure to other prolonged low air pressure, init encntrYesW94.12XDExposure to other prolonged low air pressure, subs encntrYes
Frequently asked questions
What is ICD-10 code W94?
W94 is an ICD-10-CM diagnosis code for Exposure to high and low air pressure and changes in air pressure.
Is W94 a billable code?
No. W94 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is W94 in?
W94 falls under Chapter 20: External causes of morbidity.
When did W94 become effective?
W94 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W94?
W94 belongs to category W94, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.