The Approach Open is identified by number "0" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 01DN0
Extraction of Lumbar Sympathetic Nerve, Open Approach
Extraction of Lumbar Sympathetic Nerve, Perc Endo Approach
Extraction of Lumbar Sympathetic Nerve, Perc Approach