Malignant neoplasm of ovrlp sites of female genital organs

This code signifies a primary malignant tumor that originates in or extends across two or more adjacent or overlapping anatomical sites within the female reproductive system, where the exact point of origin cannot be clearly determined or the tumor involves multiple contiguous structures. This includes cancers that span across organs like the ovary, fallopian tube, uterus, cervix, vagina, or vulva.

Apply this code when documentation explicitly states a malignant neoplasm involving overlapping or contiguous sites of the female genital organs, and a more specific site cannot be identified. This is appropriate when the tumor has spread directly from one female genital organ to an adjacent one, or when the primary site is ambiguous due to extensive involvement.

• Do not use this code if the primary site is clearly identifiable, even if there is metastasis to other female genital organs.
• Ensure documentation specifies "overlapping sites" or "contiguous involvement" of multiple female genital organs.
• Always sequence this code as the primary diagnosis when it represents the main reason for the encounter.