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 0UNKX
Release Hymen, External Approach
Release Hymen, Open Approach
Release Hymen, Via Natural or Artificial Opening
Release Hymen, Via Natural or Artificial Opening Endoscopic
Release Hymen, Percutaneous Approach
Release Hymen, Percutaneous Endoscopic Approach