The Body Part Accessory Sinus is identified by letter "P" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 09DP
Extraction of Accessory Sinus, Open Approach
Extraction of Accessory Sinus, Percutaneous Approach
Extraction of Accessory Sinus, Perc Endo Approach