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chorion

Wikipedia Summary

The chorion is the outermost fetal membrane around the embryo in mammals, birds and reptiles (amniotes). It is also present around the embryo of other animals, like insects and molluscs...
Related Codes (14)
Code
Description
Billable
Details
O30.04Twin pregnancy, dichorionic/diamniotic
O30.041Twin pregnancy, dichorionic/diamniotic, first trimester
O30.042Twin pregnancy, dichorionic/diamniotic, second trimester
O30.043Twin pregnancy, dichorionic/diamniotic, third trimester
O30.049Twin pregnancy, dichorionic/diamniotic, unspecified trimester
O30.13Triplet pregnancy, trichorionic/triamniotic
O30.131Triplet pregnancy, trichorionic/triamniotic, first trimester
O30.132Triplet pregnancy, trichorionic/triamniotic, second trimester
O30.133Triplet pregnancy, trichorionic/triamniotic, third trimester
O30.139Triplet pregnancy, trichorionic/triamniotic, unspecified trimester

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