The Body Part Orbit, Left is identified by letter "Q" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0NCQ
Extirpation of Matter from Left Orbit, Open Approach
Extirpation of Matter from Left Orbit, Percutaneous Approach
Extirpation of Matter from Left Orbit, Perc Endo Approach