C80.1

Billable

Malignant (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.

Status
Billable
Chapter
C00-D49
Parent
C80
Edition
FY2026

C00-D49 Neoplasms

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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