Malignant neoplasm of kidney, except renal pelvis (C64) ICD-10-CM
The C64 code range covers malignant neoplasm of kidney, except renal pelvis with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the C64 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C64 range.
WAGR Syndrome
A contiguous gene syndrome associated with hemizygous deletions of chromosome region 11p13. The condition is marked by the combination of WILMS TUMOR; ANIRIDIA; GENITOURINARY ABNORMALITIES; and INTELLECTUAL DISABILITY.
About the C64 Code Range
The ICD-10 code C64 identifies malignant tumors originating in the kidney tissue but specifically excludes those arising in the renal pelvis. Variations of this code distinguish whether the tumor affects the right kidney (C64.1), left kidney (C64.2), or an unspecified kidney (C64.9).
These codes are primarily used to classify various types of kidney cancers such as renal cell carcinoma, nephroblastoma (also known as Wilms tumor), and transitional cell carcinoma, among others. For example, the code C64.1 covers cancers like clear cell carcinoma or sarcomas localized in the right kidney, while C64.2 applies to similar cancers in the left kidney. The unspecified code C64.9 encompasses a broad range of malignant kidney tumors including cystic renal tumors and hereditary forms such as hereditary papillary renal cell carcinoma. Utilizing these specific ICD-10 codes helps accurately document and track malignant neoplasms of the kidney, supporting precise diagnosis and treatment planning.
Questions About This Page
How many billable codes are in the C64 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the C64 range classify?
The range classifies malignant neoplasm of kidney, except renal pelvis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
