ICD-10-CM > V00-Y99 > W85-W99 > W94 > W94.3 W94.3 Exposure to rapid changes in air pressure during descent Non-Billable/Non-Specific Codes W94.31Exposure to sudden change in air pressure in aircraft during descentW94.31XA..., initial encounterW94.31XD..., subsequent encounterW94.31XS..., sequelaW94.32Exposure to high air pressure from rapid descent in waterW94.32XA..., initial encounterW94.32XD..., subsequent encounterW94.32XS..., sequelaW94.39Exposure to other rapid changes in air pressure during descentW94.39XA..., initial encounterW94.39XD..., subsequent encounterW94.39XS..., sequela