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 0WJH0
Inspection of Retroperitoneum, Percutaneous Approach
Inspection of Retroperitoneum, Perc Endo Approach
Inspection of Retroperitoneum, Open Approach