Carcinoma in situ of lip, oral cavity and pharynx

**Excludes1:** - carcinoma in situ of aryepiglottic fold or interarytenoid fold, laryngeal aspect (D02.0) - carcinoma in situ of epiglottis NOS (D02.0) - carcinoma in situ of epiglottis suprahyoid portion (D02.0) - carcinoma in situ of skin of lip (D03.0, D04.0)

**Use additional code:** - code to identify: - exposure to environmental tobacco smoke (Z77.22) - exposure to tobacco smoke in the perinatal period (P96.81) - history of tobacco dependence (Z87.891) - occupational exposure to environmental tobacco smoke (Z57.31) - tobacco dependence (F17.-) - tobacco use (Z72.0)