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 0FF6X
Fragmentation in Left Hepatic Duct, Via Opening
Fragmentation in Left Hepatic Duct, External Approach
Fragmentation in Left Hepatic Duct, Percutaneous Approach
Fragmentation in Left Hepatic Duct, Endo
Fragmentation in Left Hepatic Duct, Perc Endo Approach
Fragmentation in Left Hepatic Duct, Open Approach