W94.2

Exposure to rapid changes in air pressure during ascent

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027

SourceCMS ICD-10-CM order file

ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODE	DESCRIPTION	TYPE
W94.21	Exposure to reduction in atmospheric pressure while surfacing from deep-water diving	Category
W94.21XA	Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, initial encounter	Billable
W94.21XD	Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, subsequent encounter	Billable
W94.21XS	Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, sequela	Billable
W94.22	Exposure to reduction in atmospheric pressure while surfacing from underground	Category
W94.22XA	Exposure to reduction in atmospheric pressure while surfacing from underground, initial encounter	Billable
W94.22XD	Exposure to reduction in atmospheric pressure while surfacing from underground, subsequent encounter	Billable
W94.22XS	Exposure to reduction in atmospheric pressure while surfacing from underground, sequela	Billable
W94.23	Exposure to sudden change in air pressure in aircraft during ascent	Category
W94.23XA	Exposure to sudden change in air pressure in aircraft during ascent, initial encounter	Billable
W94.23XD	Exposure to sudden change in air pressure in aircraft during ascent, subsequent encounter	Billable
W94.23XS	Exposure to sudden change in air pressure in aircraft during ascent, sequela	Billable
W94.29	Exposure to other rapid changes in air pressure during ascent	Category
W94.29XA	Exposure to other rapid changes in air pressure during ascent, initial encounter	Billable
W94.29XD	Exposure to other rapid changes in air pressure during ascent, subsequent encounter	Billable
W94.29XS	Exposure to other rapid changes in air pressure during ascent, sequela	Billable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.