ICD-10 Code C79.82 – Secondary malignant neoplasm of genital organs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C79.82 – Secondary malignant neoplasm of genital organs
What it is
This code identifies metastatic cancer that has spread to the genital organs from a primary site elsewhere in the body. Use it when the record clearly documents secondary malignant involvement of genital structures.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a known primary malignancy with evidence of spread to genital organs on imaging, pathology, or operative report.
When to use this code
Use C79.82 when the provider states that a malignancy in the genital organs is secondary, metastatic, or due to spread from another primary cancer. It is appropriate when the genital organ site is documented as the metastatic location, not the origin.
Assign it from the available clinical record, such as pathology, imaging, or oncology notes. If the site or primary source is unclear, check documentation before coding.
Do not use for
Do not use this code for primary cancers arising in the genital organs. Do not use it when the chart only says “mass” or “lesion” without confirming metastatic disease.
Coding tip
Code the primary malignancy first when it is still active, and use C79.82 only for confirmed secondary involvement of genital organs.