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 09CC
Extirpation of Matter from Left Mastoid Sinus, Endo
Extirpate of Matter from L Mastoid Sinus, Perc Endo Approach
Extirpation of Matter from Left Mastoid Sinus, Perc Approach
Extirpation of Matter from Left Mastoid Sinus, Open Approach