W94.1 — Exposure to prolonged low air pressure
Not billable
Is W94.1 billable?
No — W94.1 is a non-billable header code. W94.1 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 6 billable codes beneath W94.1.
Billable codes under this header
- W94.11XAExposure to residence or prolonged visit at high altitude, initial encounter
- W94.11XDExposure to residence or prolonged visit at high altitude, subsequent encounter
- W94.11XSExposure to residence or prolonged visit at high altitude, sequela
- W94.12XAExposure to other prolonged low air pressure, initial encounter
- W94.12XDExposure to other prolonged low air pressure, subsequent encounter
- W94.12XSExposure to other prolonged low air pressure, sequela
W94.1 at a glance
| Code | W94.1 |
|---|---|
| Description | Exposure to prolonged low air pressure |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from W85-W99
The conditions below can never be reported together with W94.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
What codes fall under W94.1? (2)
How long has W94.1 existed?
W94.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.