T70.20A✓ Billable
Unspecified effects of high altitude, initial encounter
Code Hierarchy
┌19Injury, poisoning and certain other consequences of external causes (S00-T88)├T66-T78Other and unspecified effects of external causes (T66-T78)├T70Effects of air pressure and water pressure
└T70.20AUnspecified effects of high altitude, initial encounter
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