Is C78.89 a billable ICD-10-CM code?

Yes. C78.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does C78.89 sit in the tabular list?

Neoplasms (C00-D49), in the block Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80).

C78.89

C78.89 — Secondary malignant neoplasm of other digestive organs

Billable / specific codeICD-10-CM

C78.89 is a billable, specific ICD-10-CM code for secondary malignant neoplasm of other digestive organs. It is valid for submission on a claim.

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

exocrine pancreatic insufficiency (K86.81)

Risk adjustment

C78.89 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

C78.89 is named in 41 Medicare coverage policies — 41 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

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A53101Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID® Update
A54188Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID®
A54386Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID® Update

Related codes at this level

Codes that share C78.8. If C78.89 is not quite right, the correct code is usually one of these.

C78.80Secondary malignant neoplasm of unspecified digestive organ

Questions about C78.89

Is C78.89 a billable ICD-10-CM code?: Yes. C78.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does C78.89 sit in the tabular list?: Neoplasms (C00-D49), in the block Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80).