The Approach External is identified by letter "X" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0LNHX
Release Perineum Tendon, Percutaneous Approach
Release Perineum Tendon, Open Approach
Release Perineum Tendon, Percutaneous Endoscopic Approach
Release Perineum Tendon, External Approach