ICD-10-CM Diagnosis Code (2025)
Official Description for C80.1
Malignant (primary) neoplasm, unspecified
Coding Notes & Guidelines for C80.1
Excludes1: Not Coded Here
secondary malignant neoplasm of unspecified site (C79.9)
Inclusion Terms
- Cancer NOS
- Cancer unspecified site (primary)
- Carcinoma unspecified site (primary)
- Malignancy unspecified site (primary)
Parent Code (Less Specific):
About ICD-10-CM Code C80.1 (Malignant)
ICD-10-CM code C80.1 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM C80.1 became effective on October 1, 2024.
This page provides detailed information about C80.1 - Malignant (primary) neoplasm, unspecified. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Malignant related to unspecified.