C64 (Malignant neoplasm of kidney, except renal pelvis) compared with Z80.51 (Family history of malignant neoplasm of kidney), from the official CMS tabular data. Z80.51 is the personal-history/screening code for the active disease C64 names. MedCoder-derived
Personal-history or screening code versus the active disease.
Active disease for this site (kidney)
A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code for the same site.
Source: CMS Table of Neoplasms (site match derived from the code title)
History or screening versus active disease. Z80.51 is the personal-history or screening code for the active disease C64 names.
Site match derived from the code’s own title against the CMS/CDC Table of Neoplasms. A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code.
| C64Malignant neoplasm of kidney, except renal pelvis | Z80.51Family history of malignant neoplasm of kidney | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Malignant neoplasm of kidney, except renal pelvis is a non-billable ICD-10-CM category code (C64). | Family history of malignant neoplasm of kidney is a billable ICD-10-CM diagnosis code (Z80.51). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources