V91: Multiple gestation placenta status
Code first multiple gestation (651.0-651.9)
V91.0 Twin gestation placenta status
V91.00: Twin gestation, unspecified number of placenta, unspecified number of amniotic sacs
V91.01: Twin gestation, monochorionic/monoamniotic (one placenta, one amniotic sac)
V91.02: Twin gestation, monochorionic/diamniotic (one placenta, two amniotic sacs)
V91.03: Twin gestation, dichorionic/diamniotic (two placentae, two amniotic sacs)
V91.09: Twin gestation, unable to determine number of placenta and number of amniotic sacs
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