ICD-10 Code C57 – Malignant neoplasm of other and unspecified female genital organs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C57 – Malignant neoplasm of other and unspecified female genital organs
What it is
C57 identifies a malignant tumor arising in female genital organs not otherwise specified in the code set. Use it when the record documents a cancer of the female genital tract that is not assigned to a more specific site.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe a pelvic mass, abnormal vaginal bleeding, pain, or findings from imaging, biopsy, or surgical pathology confirming malignancy.
When to use this code
Use C57 when the provider documents a primary malignant neoplasm of an unspecified or other female genital organ and no more specific site is stated. It may also fit when pathology confirms malignancy but the exact organ is not identified in the available record. Check documentation before coding a presumed site.
Do not use for
Do not use this code if the malignancy is documented in a specific female genital organ with its own ICD-10-CM code. Do not use it for benign, in situ, or uncertain neoplasms.
Coding tip
If the site is vague, query the provider before defaulting to C57.