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 0LNFX
Release Right Abdomen Tendon, Open Approach
Release Right Abdomen Tendon, Percutaneous Approach
Release Right Abdomen Tendon, External Approach
Release Right Abdomen Tendon, Perc Endo Approach