Quad preg w two or more monoamnio fetuses, third trimester

This diagnosis code signifies a pregnancy involving four fetuses, where at least two of these fetuses share a single amniotic sac, and the pregnancy is in its third trimester. This specific monoamniotic condition carries increased risks due to potential cord entanglement and other complications for the shared fetuses.

Apply this code when documentation clearly indicates a quadruplet gestation with two or more fetuses identified as monoamniotic, and the patient is in the 28th week of gestation or beyond. This code is crucial for capturing the high-risk nature of such a complex multiple gestation.

• Ensure documentation specifies both the number of fetuses (quadruplet) and the monoamniotic status of at least two fetuses.
• Verify the gestational age to confirm the third trimester (28 weeks 0 days to 40 weeks 6 days).
• Do not confuse with codes for dichorionic/diamniotic or other amniotic configurations in multiple gestations.