Malignant neoplasm of uterine adnexa, unspecified

This code signifies a cancerous tumor originating in the uterine adnexa, which includes the fallopian tubes, ovaries, and broad ligaments, when the specific adnexal structure involved is not documented. It indicates a primary malignancy rather than a metastatic lesion.

This code is appropriate when the medical record clearly states a malignant neoplasm of the uterine adnexa but does not specify whether it is ovarian, fallopian tube, or broad ligament in origin. Documentation supporting its use would include pathology reports or physician notes confirming malignancy and adnexal involvement without further anatomical precision.

• Avoid using this code if the specific adnexal site (e.g., ovary, fallopian tube) is documented; use the more specific code.
• Always sequence this code as the primary diagnosis if it represents the reason for the encounter or treatment.
• Review the pathology report carefully for definitive site identification to ensure the most specific code is chosen.