The Body Part Skin, Perineum is identified by number "9" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0H99
Drainage of Perineum Skin, External Approach
Drainage of Perineum Skin with Drain Dev, Extern Approach
Drainage of Perineum Skin, External Approach, Diagnostic