ICD-10-CM > V00-Y99 > W85-W99 > W94 > W94.2 > W94.21 W94.21 Exposure to reduction in atmospheric pressure while surfacing from deep-water diving Non-Billable/Non-Specific Codes W94.21XA..., initial encounterW94.21XD..., subsequent encounterW94.21XS..., sequela