ICD-10 Code C62.91 – Malignant neoplasm of right testis, unspecified whether descended or undescended (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C62.91 – Malignant neoplasm of right testis, unspecified whether descended or undescended
What it is
This code identifies a malignant tumor in the right testis. Use it when the record confirms testicular cancer on the right side, but does not specify whether the testis is descended or undescended.
Clinical signs
Typical findings include a painless testicular mass, scrotal swelling, or a sense of heaviness. Clinical features vary; refer to documentation, imaging, and pathology when available.
When to use this code
Use C62.91 when the provider documents primary cancer of the right testis and does not state descent status. It is appropriate for confirmed malignant neoplasm, including cases supported by biopsy or operative pathology. If the note says only “testicular mass” or “suspected cancer,” do not code this diagnosis.
Do not use for
Do not use this code for benign testicular lesions, inflammatory conditions, or left-sided testicular cancer. Check documentation if the site is unspecified or if the tumor involves another male genital structure.
Coding tip
Verify laterality and whether the testis is descended or undescended before assigning the code.