The Body Part Mastoid Sinus, Left is identified by letter "C" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 09QC
Repair Left Mastoid Sinus, Open Approach
Repair Left Mastoid Sinus, Percutaneous Approach
Repair Left Mastoid Sinus, Endo
Repair Left Mastoid Sinus, Percutaneous Endoscopic Approach