Malignant neoplasm of parametrium

This code signifies a cancerous tumor originating in the parametrium, the fibrous tissue and fat surrounding the uterus. This malignancy is typically a secondary extension from a primary cervical or uterine cancer, rather than a primary tumor of the parametrium itself.

Assign this code when documentation explicitly states a malignant neoplasm involving the parametrial tissue. This is commonly seen in advanced stages of gynecological cancers, particularly cervical carcinoma, where there is direct extension to the surrounding structures. Supporting documentation would include pathology reports, operative notes, and imaging studies confirming parametrial involvement.

• This code represents a secondary site of malignancy; ensure the primary site (e.g., cervix, uterus) is also coded.
• Distinguish from primary parametrial tumors, which are exceedingly rare and would likely be coded to a more specific soft tissue sarcoma.
• Do not use for benign conditions or inflammatory processes of the parametrium.