ICD-10 Code C63.02 – Malignant neoplasm of left epididymis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C63.02 – Malignant neoplasm of left epididymis
What it is
This code identifies a malignant tumor arising in the left epididymis, the coiled tube behind the testis that stores and transports sperm. Use it when documentation clearly specifies left epididymal cancer.
Clinical signs
Clinical features may include a scrotal mass, swelling, or localized discomfort, but findings vary. Diagnosis is usually supported by imaging and pathology; refer to documentation when the laterality or site is unclear.
When to use this code
Use C63.02 when the provider documents primary malignancy of the left epididymis. It also applies when the record states cancer in the left epididymis without naming a different genitourinary site. If the note says metastatic disease or an unspecified scrotal mass, check documentation before coding.
Do not use for
Do not use this code for benign epididymal lesions, inflammation, or a malignancy in the right epididymis. If the site is not confirmed as left epididymis, check documentation.
Coding tip
Verify laterality and primary site in the pathology or operative note before assigning C63.02.