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 0DN90
Release Duodenum, Endo
Release Duodenum, Percutaneous Endoscopic Approach
Release Duodenum, Open Approach
Release Duodenum, Via Natural or Artificial Opening
Release Duodenum, Percutaneous Approach