Matern care for or susp placntl insuff, third tri, fts3

This code signifies ongoing medical supervision and management provided to a pregnant patient in her third trimester due to a diagnosed or suspected inadequacy of placental function. This insufficiency compromises the delivery of nutrients and oxygen to the fetus, specifically when the third fetus in a multiple gestation is affected.

Apply this code when documentation indicates maternal care for placental insufficiency identified or suspected during the third trimester, and the clinical concern specifically pertains to the third fetus. Supporting documentation would include ultrasound findings (e.g., fetal growth restriction, abnormal Doppler studies), clinical assessment of fetal well-being, and the patient's gestational age.

• Ensure documentation clearly specifies "third trimester" and identifies the affected fetus as the "third fetus" in a multiple gestation.
• Do not use this code for placental insufficiency identified in the first or second trimester; specific codes exist for those periods.
• Sequence this code as a secondary diagnosis following the code for the specific complication (e.g., fetal growth restriction, oligohydramnios) if applicable.