C80Header code — not billable

Malignant neoplasm without specification of site

Chapter
2. Neoplasms
Category
C80
Effective date
October 1, 2026

Related codes in category C80

C80.0Disseminated malignant neoplasm, unspecifiedYesC80.1Malignant (primary) neoplasm, unspecifiedYesC80.2Malignant neoplasm associated with transplanted organYes

Frequently asked questions

What is ICD-10 code C80?

C80 is an ICD-10-CM diagnosis code for Malignant neoplasm without specification of site.

Is C80 a billable code?

No. C80 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is C80 in?

C80 falls under Chapter 2: Neoplasms.

When did C80 become effective?

C80 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to C80?

C80 belongs to category C80, which includes 3 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.