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 0SNMX
Release Right Metatarsal-Phalangeal Joint, Perc Approach
Release Right Metatarsal-Phalangeal Joint, Open Approach
Release Right Metatarsal-Phalangeal Joint, External Approach
Release R Metatarsophal Jt, Perc Endo Approach