C133-char group

Malignant neoplasm of hypopharynx

⇄ Primary-code rule changed vs QĐ4469

Coding rules (TT06)

●Avoid — more specific 4-5 char codes exist (see below)

Coding guidance (WHO 2019)

Excl.: piriform sinus (C12)

Codes within C13

C13.0Postcricoid region C13.1Aryepiglottic fold, hypopharyngeal aspect C13.2Posterior wall of hypopharynx C13.8Overlapping lesion of hypopharynx C13.9Hypopharynx, unspecified