ICD-10 Code C62.9 – Malignant neoplasm of testis, unspecified whether descended or undescended (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C62.9 – Malignant neoplasm of testis, unspecified whether descended or undescended
What it is
This code identifies a malignant tumor arising in the testis when the record does not specify whether the testis is descended or undescended. Use it for confirmed testicular cancer when laterality or descent status is not documented.
Clinical signs
Typical findings include a painless testicular mass, scrotal enlargement, or heaviness. Clinical features vary; refer to documentation, imaging, and pathology when available.
When to use this code
Assign C62.9 when the provider documents primary testicular malignancy but does not state whether the testis is descended or undescended. Use it after pathology, imaging, or specialist assessment confirms cancer. If the note later specifies descent status or a different site, code the documented detail instead.
Do not use for
Do not use this code for benign testicular masses, inflammation, or uncertainty about malignancy. Check documentation if the tumor is described as metastatic, extratesticular, or arising from another genital structure.
Coding tip
Query for descent status when the chart only says “testicular cancer,” because that detail can affect code selection.