C80: Malignant neoplasm without specification of site
C80.1: Malignant (primary) neoplasm, unspecified

inclusionTerm
Cancer NOS
Cancer unspecified site (primary)
Carcinoma unspecified site (primary)
Malignancy unspecified site (primary)

excludes1
secondary malignant neoplasm of unspecified site (C79.9)

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