C78.6

C78.6: Secondary malignant neoplasm of retroperitoneum and peritoneum

Billable / specific codeICD-10-CM

C78.6 is a billable, specific ICD-10-CM code for secondary malignant neoplasm of retroperitoneum and peritoneum. It is valid for submission on a claim.

Check C78.6 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above C78.6

A category’s note binds every code beneath it.

Written on C78: Secondary malignant neoplasm of respiratory and digestive organs

secondary carcinoid tumors of liver (C7B.02)
secondary carcinoid tumors of peritoneum (C7B.04)

Excludes2 inherited from the categories above C78.6

Not part of this code, but both may be coded when both are present.

Written on C78: Secondary malignant neoplasm of respiratory and digestive organs

lymph node metastases (C77.0)

Risk adjustment

C78.6 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. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

C78.6 is named in 49 Medicare coverage policies: 49 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

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C78.6: Secondary malignant neoplasm of retroperitoneum and peritoneum

Excludes1 inherited from the categories above C78.6

Excludes2 inherited from the categories above C78.6

Risk adjustment

Medicare coverage

Alphabetic index entries that lead here

Code history

Other codes under C78