1. Home
  2. ICD-10-CM Codes List
  3. C00–D49
  4. C64-C68
  5. Malignant neoplasm of kidney, except renal pelvis (C64)

Malignant neoplasm of kidney, except renal pelvis (C64)

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.

Instructional Notations

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.

  • malignant carcinoid tumor of the kidney C7A.093
  • malignant neoplasm of renal calyces C65
  • malignant neoplasm of renal pelvis C65

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

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.