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C7A.024

C7A.024: Malignant carcinoid tumor of the descending colon

Billable / specific codeICD-10-CM

C7A.024 is a billable, specific ICD-10-CM code for malignant carcinoid tumor of the descending colon. It is valid for submission on a claim.

Check C7A.024 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above C7A.024

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

Written on C7A: Malignant neuroendocrine tumors

  • malignant pancreatic islet cell tumors (C25.4)
  • Merkel cell carcinoma (C4A.-)

Other codes that can never be billed with C7A.024

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • C75Malignant neoplasm of other endocrine glands and related structures

Risk adjustment

C7A.024 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 21 Lymphoma and Other Cancers0.671 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

C7A.024 is named in 51 Medicare coverage policies: 51 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52479Oral Anticancer Drugs - Policy Article
  • A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
  • A52986Billing and Coding: Biomarkers for Oncology
  • A53095Billing and Coding: Lab: Bladder/Urothelial Tumor Markers

Alphabetic index entries that lead here

  • Tumor›carcinoid›malignant›descending colon

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under C7A.02

ICD-10-CMFY2027· effective October 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.