The Device No Device is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0H90XZ
Drainage of Scalp Skin, External Approach
Drainage of Scalp Skin, External Approach, Diagnostic
Drainage of Scalp Skin with Drainage Device, Extern Approach