C80.1
BillableMalignant (primary) neoplasm, unspecified
C80.1 is the ICD-10-CM code for Malignant (primary) neoplasm, unspecified. It is a billable, specific code valid for reimbursement.
C00-D49 Neoplasms
What this means — in plain language
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Includes
- •Cancer NOS
- •Cancer unspecified site (primary)
- •Carcinoma unspecified site (primary)
- •Malignancy unspecified site (primary)
Excludes1 — not coded here
- •secondary malignant neoplasm of unspecified site (C79.9)
Frequently asked questions
- What is ICD-10 code C80.1?
- C80.1 is the ICD-10-CM code for "Malignant (primary) neoplasm, unspecified". It falls under C00-D49 Neoplasms.
- Is C80.1 a billable code?
- Yes — C80.1 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from C80.1?
- Excludes1 (not coded here): secondary malignant neoplasm of unspecified site (C79.9).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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