Oth mult gest, num chorions & amnions = num ftses, 1st tri

This code describes a multiple gestation pregnancy (e.g., twins, triplets) where each fetus has its own individual chorion and amnion, meaning they are dichorionic-diamniotic. This specific code applies when this condition is identified during the first trimester of pregnancy.

Use this code for pregnancies confirmed by ultrasound to involve multiple fetuses, each with its own distinct chorionic and amniotic sac, and the gestational age is within the first trimester (up to 13 weeks and 6 days). Documentation should clearly state the number of fetuses, and confirm dichorionic-diamniotic status and first-trimester dating.

• Ensure documentation explicitly states "dichorionic-diamniotic" or equivalent for all fetuses.
• Verify the gestational age falls within the first trimester; otherwise, a different trimester code (O30.832 or O30.833) would be appropriate.
• This code is for "other specified multiple gestation," meaning it's not a twin, triplet, or quadruplet gestation specifically coded elsewhere.