The Body Part Pineal Body is identified by number "1" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0GJ1
Inspection of Pineal Body, Percutaneous Approach
Inspection of Pineal Body, Open Approach
Inspection of Pineal Body, Percutaneous Endoscopic Approach