Is W94.21 a billable code?
No. W94.21 is a header code that groups 0 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
W94.21: Exposure to reduction in atmospheric pressure while surfacing from deep-water diving
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
W94.21 groups related diagnoses under exposure to reduction in atmospheric pressure while surfacing from deep-water diving. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Other codes in W94.2 Exposure to rapid changes in air pressure during ascent
W94.21 questions
What does W94.21 mean?
W94.21 is the ICD-10-CM code for Exposure to reduction in atmospheric pressure while surfacing from deep-water diving. It is in chapter 21, External causes of morbidity (V00-Y99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.