ICD-10 Code C79.02 – Secondary malignant neoplasm of left kidney and renal pelvis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C79.02 – Secondary malignant neoplasm of left kidney and renal pelvis
What it is
This code identifies metastatic cancer found in the left kidney or renal pelvis. Use it when a primary malignancy from another site has spread to this location.
Clinical signs
Clinical features vary; refer to documentation. Findings may include imaging or pathology showing a secondary tumor in the left kidney or renal pelvis, often with a known primary cancer elsewhere.
When to use this code
Use C79.02 when the record clearly documents secondary malignant involvement of the left kidney or renal pelvis. You may code it from imaging, biopsy, operative findings, or an oncology note confirming metastasis. Make sure the primary cancer is also coded when documented.
Do not use for
Do not use this code for primary kidney cancer or benign renal lesions. Check documentation if the laterality is not left or if the note only states renal mass without confirming metastasis.
Coding tip
Verify both laterality and metastatic status in the source note before assigning C79.02.