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W94 Exposure to high and low air pressure and changes in air pressure
BackW94.0Exposure to prolonged high air pressureCategoryW94.1Exposure to prolonged low air pressureCategory2 →W94.11Exposure to residence or prolonged visit at high altitudeCategoryW94.12Exposure to other prolonged low air pressureCategoryW94.2Exposure to rapid changes in air pressure during ascentCategory4 →W94.21Exposure to reduction in atmospheric pressure while surfacing from deep-water divingCategoryW94.22Exposure to reduction in atmospheric pressure while surfacing from undergroundCategoryW94.23Exposure to sudden change in air pressure in aircraft during ascentCategoryW94.29Exposure to other rapid changes in air pressure during ascentCategoryW94.3Exposure to rapid changes in air pressure during descentCategory3 →W94.31Exposure to sudden change in air pressure in aircraft during descentCategoryW94.32Exposure to high air pressure from rapid descent in waterCategoryW94.39Exposure to other rapid changes in air pressure during descentCategory
Category
W94
Exposure to high and low air pressure and changes in air pressure
NOTE
7th character: The appropriate 7th character is to be added to each code from category W94
7th character definitions: initial encounter
subsequent encounter
sequela
7th character definitions: initial encounter
subsequent encounter
sequela
- Chapter
- XX · External causes of morbidity
- Section
- W85-W99
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.