C80.0 — Disseminated malignant neoplasm, unspecified
C80.0 is a billable, specific ICD-10-CM code for disseminated malignant neoplasm, unspecified. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Carcinomatosis NOS
- Generalized cancer, unspecified site (primary) (secondary)
- Generalized malignancy, unspecified site (primary) (secondary)
Other codes that can never be billed with C80.0
These codes carry an Excludes1 note pointing at C80.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C80.0 alone.
- C79.9Secondary malignant neoplasm of unspecified site
Risk adjustment
C80.0 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 18 Cancer Metastatic to Bone, Other and Unspecified Metastatic Cancer; Acute Leukemia Except Myeloid2.341 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
C80.0 is named in 56 Medicare coverage policies — 56 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
- A52479Oral Anticancer Drugs - Policy Article
- A52479Oral Anticancer Drugs - Policy Article
- A52479Oral Anticancer Drugs - Policy Article
How C80.0 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to C80.0.
- Carcinomatosis
- Carcinoma›generalized, with unspecified primary site
- Carcinomatosis›unspecified site(primary) (secondary)
Related codes at this level
Codes that share C80. If C80.0 is not quite right, the correct code is usually one of these.
Questions about C80.0
- Is C80.0 a billable ICD-10-CM code?
- Yes. C80.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does C80.0 sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80).