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C78.30

C78.30Secondary malignant neoplasm of unspecified respiratory organ

Billable / specific codeICD-10-CM

C78.30 is a billable, specific ICD-10-CM code for secondary malignant neoplasm of unspecified respiratory organ. It is valid for submission on a claim.

Risk adjustment

C78.30 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 17 Cancer Metastatic to Lung, Liver, Brain, and Other Organs; Acute Myeloid Leukemia Except Promyelocytic4.209 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

C78.30 is named in 12 Medicare coverage policies 12 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
  • A56748Billing and Coding: White Cell Colony Stimulating Factors
  • A56867Billing and Coding: Genomic Sequence Analysis Panels in the Treatment of Solid Organ Neoplasms
  • A56962Billing and Coding: MolDX: NRAS Genetic Testing

Related codes at this level

Codes that share C78.3. If C78.30 is not quite right, the correct code is usually one of these.

Questions about C78.30

Is C78.30 a billable ICD-10-CM code?
Yes. C78.30 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does C78.30 sit in the tabular list?
Neoplasms (C00-D49), in the block Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.