W94.21XABillable
Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, initial encounter
Short description: Expsr to rdct in atmos pressr wh surfc fr dp-watr div, init
- Chapter
- 20. External causes of morbidity
- Category
- W94
- Effective date
- October 1, 2026
Related codes in category W94
W94Expsr to high and low air pressr and changes in air pressureW94.0Exposure 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 encntrYes
Frequently asked questions
What is ICD-10 code W94.21XA?
W94.21XA is an ICD-10-CM diagnosis code for Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, initial encounter.
Is W94.21XA a billable code?
Yes. W94.21XA is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is W94.21XA in?
W94.21XA falls under Chapter 20: External causes of morbidity.
When did W94.21XA become effective?
W94.21XA has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W94.21XA?
W94.21XA 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.