Malignant neoplasm of renal pelvis (C65) ICD-10-CM
The C65 code range covers malignant neoplasm of 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.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- malignant neoplasm of pelviureteric junction
- malignant neoplasm of renal calyces
Codes in the C65 Range 4 codes · 3 billable
About the C65 Code Range
The ICD-10 code series C65 is specifically used for diagnosing and coding malignant neoplasms of the renal pelvis, the part of the kidney that collects urine before it moves to the ureter. These codes distinguish between cancers of the right renal pelvis (C65.1), left renal pelvis (C65.2), and unspecified renal pelvis (C65.9).
These codes play a crucial role in documenting cancers such as transitional cell carcinoma of either the right or left renal pelvis, also known by synonyms including "primary transitional cell carcinoma of kidney" or "primary malignant neoplasm of renal pelvis." For cases where the location is not specified, C65.9 applies and covers tumors like malignant tumors of the renal calyx or pelviureteric junction. Understanding these distinctions helps medical coders accurately assign the ICD-10 code for renal pelvis cancer and supports healthcare providers in managing and reporting urinary system cancers effectively.
Questions About This Page
How many billable codes are in the C65 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 C65 range classify?
The range classifies malignant neoplasm of 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.
