Malignant neoplasm of uterine adnexa, unspecified site

This code signifies a cancerous growth originating in the uterine adnexa, which includes the ovaries, fallopian tubes, and broad ligaments, when the specific primary site within these structures is not documented. It indicates a confirmed malignancy without further anatomical detail.

Apply this code when pathology confirms a malignant neoplasm of the adnexa, but the medical record lacks specificity regarding whether it's ovarian, tubal, or ligamentous. Documentation supporting its use would include pathology reports confirming malignancy in the adnexal region without a more precise origin.

• Avoid using this code if a more specific adnexal site (e.g., ovary, fallopian tube) is documented; always code to the highest level of specificity.
• This code is for primary malignancy; use secondary codes for metastatic disease to the adnexa.
• Ensure documentation clearly states "unspecified" or lacks sufficient detail to assign a more precise adnexal site.