C7A

ICD-10Non-billable category

Malignant neuroendocrine tumors

Official ICD-10-CM descriptor (FY2026)

Malignant neuroendocrine tumors

C7A is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Excludes2

Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

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

Use additional code

Report an additional code to identify the associated condition.

  • code to identify any associated endocrine syndrome, such as:
  • carcinoid syndrome (E34.00)

Code also

Two codes may be needed; sequencing depends on the reason for the encounter.

  • any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-)

More specific codes under C7A

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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