ICD-10 Code C62.00 – Malignant neoplasm of unspecified undescended testis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C62.00 – Malignant neoplasm of unspecified undescended testis
What it is
C62.00 identifies a malignant tumor arising in an undescended testis when the side is not specified. Use it for a documented cancer diagnosis involving an undescended testicle, not for benign cryptorchidism alone.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records note a nonpalpable or undescended testis, a scrotal or inguinal mass, or imaging and pathology confirming malignancy.
When to use this code
Use this code when the provider documents malignant neoplasm of an undescended testis and does not identify right or left side. It also fits confirmed cancer in a cryptorchid testis after biopsy, surgery, or pathology. Check documentation if the record only says testicular mass or undescended testis without malignancy.
Do not use for
Do not use C62.00 for benign undescended testis, suspected cancer, or unspecified testicular mass without a malignant diagnosis. If the side is documented, use the more specific laterality code instead.
Coding tip
Confirm both malignancy and undescended testis status in the provider note before assigning C62.00.