Convert ICD-10 Code W94.21XD to ICD-9

Source ICD-10 Code		Target ICD-9 Code
W94.21XD Expsr to rdct in atmos pressr wh surfc fr dp-watr div, subs		E902.2 Air press change: diving
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code W94.21XD - exposure to reduction in atmospheric pressure while surfacing from deep-water diving, subsequent encounter based on the most recent General Equivalence Mappings (GEMS) information.