C80
Header — not billableMalignant neoplasm without specification of site
The ICD-10 code for malignant neoplasm without specification of site is C80.
C80 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- malignant carcinoid tumor of unspecified site (C7A.00)
- malignant neoplasm of specified multiple sites- code to each site
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- C76Malignant neoplasm of other and ill-defined sitesnon-billable header
- C77Secondary and unspecified malignant neoplasm of lymph nodesnon-billable header
- C78Secondary malignant neoplasm of respiratory and digestive organsnon-billable header
- C79Secondary malignant neoplasm of other and unspecified sitesnon-billable header
- C80Malignant neoplasm without specification of sitenon-billable header