Quad preg, unsp num plcnta & amnio sacs, second trimester

This code signifies a pregnancy involving four fetuses, currently in the second trimester. It is used when the specific number of placentas and amniotic sacs for these quadruplets has not been determined or documented.

Apply this code for a patient confirmed to be carrying quadruplets during her second trimester, particularly when initial ultrasound or clinical documentation does not specify chorionicity or amnionicity. This code is appropriate for ongoing prenatal care encounters for such a pregnancy.

• Ensure documentation explicitly states "quadruplet pregnancy" and "second trimester."
• Do not use if chorionicity or amnionicity (e.g., monochorionic, dichorionic) is known; more specific codes exist.
• Always sequence this code as a primary diagnosis for the pregnancy encounter, followed by any relevant complications.