The Body Part Nasopharynx is identified by letter "N" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 09NN
Release Nasopharynx, Via Natural or Artificial Opening
Release Nasopharynx, Percutaneous Approach
Release Nasopharynx, Percutaneous Endoscopic Approach
Release Nasopharynx, Endo
Release Nasopharynx, Open Approach