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 0KNHX
Release Right Thorax Muscle, Open Approach
Release Right Thorax Muscle, Perc Endo Approach
Release Right Thorax Muscle, External Approach
Release Right Thorax Muscle, Percutaneous Approach