ICD-10 Code C79.61 – Secondary malignant neoplasm of right ovary (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C79.61 – Secondary malignant neoplasm of right ovary
What it is
This code identifies metastatic cancer involving the right ovary, meaning the tumor started elsewhere and spread there. Use it when documentation specifies the right ovary as a secondary malignant site.
Clinical signs
Clinical features vary; refer to documentation. Patients may have findings consistent with an ovarian mass, pelvic discomfort, abdominal distention, or imaging evidence of metastatic involvement.
When to use this code
Use C79.61 when the record clearly states secondary malignant neoplasm of the right ovary or metastatic disease to the right ovary. It is appropriate for confirmed metastatic involvement, including pathology, imaging, or provider documentation supporting the site.
If the primary cancer is known, code it separately when required by the record and sequencing rules. Check documentation when laterality is unclear or when only “ovarian metastasis” is documented without specifying the right side.
Do not use for
Do not use this code for primary ovarian cancer or for benign ovarian masses. If the documentation does not specify the right ovary, check documentation before assigning a laterality-specific code.
Coding tip
Confirm both metastatic status and laterality in the provider note before coding.