Adenomyosis of the uterus

This code signifies the presence of adenomyosis, a gynecological condition where endometrial tissue, which normally lines the uterus, grows into the muscular wall of the uterus (myometrium). This misplaced tissue continues to function as it would in the uterine lining, thickening, breaking down, and bleeding with each menstrual cycle, leading to symptoms like heavy, prolonged menstrual bleeding and severe menstrual cramps.

Use this code when documentation confirms a diagnosis of adenomyosis affecting the uterus. This diagnosis is typically made based on imaging studies such as MRI or transvaginal ultrasound, often supported by clinical symptoms. It is appropriate for both initial diagnoses and subsequent encounters for management of the condition.

• Ensure the documentation clearly specifies adenomyosis of the uterus, as other endometrial conditions exist.
• Do not confuse with endometriosis (N80.A-N80.F), which involves endometrial tissue outside the uterus.
• Consider sequencing this code as a primary diagnosis when adenomyosis is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.