C18.2
C18.2: Malignant neoplasm of ascending colon
Billable / specific codeICD-10-CM
C18.2 is a billable, specific ICD-10-CM code for malignant neoplasm of ascending colon. It is valid for submission on a claim.
Check C18.2 with the rest of the claim: free scrubberExcludes1 inherited from the categories above C18.2
A category’s note binds every code beneath it.
Written on C18: Malignant neoplasm of colon
- malignant carcinoid tumors of the colon (C7A.02-)
Risk adjustment
C18.2 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 22 Bladder, Colorectal, and Other Cancers0.363 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
C18.2 is named in 80 Medicare coverage policies: 80 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
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Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under C18
- C18.0Malignant neoplasm of cecum
- C18.1Malignant neoplasm of appendix
- C18.3Malignant neoplasm of hepatic flexure
- C18.4Malignant neoplasm of transverse colon
- C18.5Malignant neoplasm of splenic flexure
- C18.6Malignant neoplasm of descending colon
- C18.7Malignant neoplasm of sigmoid colon
- C18.8Malignant neoplasm of overlapping sites of colon
- C18.9Malignant neoplasm of colon, unspecified