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Neoplasm Table

colon

SiteMalignant primaryMalignant secondaryCa in situBenignUncertain behaviorUnspecified behavior
colon — see also Neoplasm, intestine, largeC18.9C78.5
with rectumC19C78.5D01.1D12.7D37.5D49.0
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.

Frequently asked questions

What are the ICD-10-CM neoplasm codes for colon?

Per the ICD-10-CM Neoplasm Table: malignant primary C18.9; malignant secondary C78.5. Always confirm the code, and add the required 7th character where applicable, in the Tabular List.

ICD-10-CM Neoplasm Table maintained by CDC/NCHS (public domain), from the CMS FY2027 release.