Quad preg, unable to dtrm num plcnta & amnio sacs, 2nd tri

This code signifies a pregnancy involving four fetuses where the specific details regarding the number of placentas (chorionicity) and amniotic sacs (amnionicity) cannot be determined. This uncertainty is noted during the second trimester of gestation. It indicates a lack of definitive ultrasound or other diagnostic information about the fetal membrane and placental arrangements for a quadruplet pregnancy.

Use this code when a patient is confirmed to be carrying quadruplets, and despite diagnostic efforts during the second trimester, the chorionicity and amnionicity remain unknown. This typically occurs when imaging is inconclusive or incomplete, preventing a clear determination of how the fetuses are sharing placentas and sacs. Documentation should clearly state "quadruplet pregnancy" and explicitly mention the inability to determine the number of placentas and amniotic sacs.

• Ensure documentation specifies "quadruplet pregnancy" and the inability to determine chorionicity/amnionicity.
• This code is specific to the second trimester; verify the gestational age documented.
• Do not use if chorionicity and amnionicity are known, even if complex; use more specific codes in those instances.