Placenta percreta, second trimester

This code signifies a severe form of placenta accreta spectrum where the placental villi invade through the entire myometrium and penetrate the uterine serosa, potentially involving adjacent organs, specifically diagnosed during the second trimester of pregnancy. It represents a life-threatening obstetric complication associated with significant maternal morbidity and mortality.

Apply this code when documentation clearly states placenta percreta and specifies the diagnosis was made during the second trimester. This typically occurs following imaging studies (e.g., ultrasound, MRI) and/or clinical findings suggestive of deep placental invasion. Supporting documentation should include the trimester of diagnosis.

• Ensure the medical record explicitly states "percreta" to differentiate from increta or accreta.
• Verify the trimester of diagnosis; this code is specific to the second trimester.
• Code any associated complications, such as hemorrhage or organ involvement, separately.