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C48.1

C48.1Malignant neoplasm of specified parts of peritoneum

Billable / specific codeICD-10-CM

C48.1 is a billable, specific ICD-10-CM code for malignant neoplasm of specified parts of peritoneum. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Malignant neoplasm of cul-de-sac
  • Malignant neoplasm of mesentery
  • Malignant neoplasm of mesocolon
  • Malignant neoplasm of omentum
  • Malignant neoplasm of parietal peritoneum
  • Malignant neoplasm of pelvic peritoneum

Risk adjustment

C48.1 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 20 Lung and Other Severe Cancers1.136 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

C48.1 is named in 104 Medicare coverage policies 104 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52370Billing and Coding: Bevacizumab and biosimilars
  • A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
  • A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
  • A52453Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs

Related codes at this level

Codes that share C48. If C48.1 is not quite right, the correct code is usually one of these.

Questions about C48.1

Is C48.1 a billable ICD-10-CM code?
Yes. C48.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does C48.1 sit in the tabular list?
Neoplasms (C00-D49), in the block Malignant neoplasms of mesothelial and soft tissue (C45-C49).
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.