C80.1 - Malignant (primary) neoplasm, unspecified
- Applicable to Malignant (primary) neoplasm, unspecified
- The 2025 edition of ICD10-CM C80.1 became effective on October 1, 2024.
- This is the American ICD10-CM version of C80.1 - other international versions of ICD10 C80.1 may differ.
- C80.1 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Inclusion Term
- Cancer NOS
- Cancer unspecified site (primary)
- Carcinoma unspecified site (primary)
- Malignancy unspecified site (primary)
Type 1 Excludes
- secondary malignant neoplasm of unspecified site (C79.9)
The following codes above C80.1 contain annotation back-references that may be applicable to C80.1:
Chapter: C00-D49 Neoplasms
Section: C76-C80 Malignant neoplasms of ill-defined, other secondary and unspecified sites
Category: C80 Malignant neoplasm without specification of site
Billable/Specific Code
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Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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