W94
⚠ Non-billable
Exposure to high and low air pressure and changes in air pressure
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
W94
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code W94?
ICD-10-CM code W94 represents Exposure to high and low air pressure and changes in air pressure. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is W94 billable?
No. W94 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is W94 in?
W94 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the W94 category
W94.0
Exposure to prolonged high air pressure
Non-billable
W94.1
Exposure to prolonged low air pressure
Non-billable
W94.2
Exposure to rapid changes in air pressure during ascent
Non-billable
W94.3
Exposure to rapid changes in air pressure during descent
Non-billable
W94.11
Exposure to residence or prolonged visit at high altitude
Non-billable
W94.12
Exposure to other prolonged low air pressure
Non-billable
W94.21
Exposure to reduction in atmospheric pressure while surfacing from deep-water diving
Non-billable
W94.22
Exposure to reduction in atmospheric pressure while surfacing from underground
Non-billable
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