C14: Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx
C14.8: Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx

inclusionTerm
Primary malignant neoplasm of two or more contiguous sites of lip, oral cavity and pharynx

excludes1
'book leaf' neoplasm [ventral surface of tongue and floor of mouth] (C06.89)

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