C64 vs C65
C64 (Malignant neoplasm of kidney, except renal pelvis) compared with C65 (Malignant neoplasm of renal pelvis), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. C64 carries an Excludes1 note covering C65: “malignant neoplasm of renal calyces (C65.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. C64 carries an Excludes1 note covering C65: “malignant neoplasm of renal pelvis (C65.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| C64Malignant neoplasm of kidney, except renal pelvis | C65Malignant neoplasm of renal pelvis | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of kidney, except renal pelvis is a non-billable ICD-10-CM category code (C64). | Malignant neoplasm of renal pelvis is a non-billable ICD-10-CM category code (C65). |
| Includes | — | malignant neoplasm of pelviureteric junction malignant neoplasm of renal calyces |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources