ICD-9-CM Codes ICD-9-PCS Codes

V91.01 - Twin gestation, monochorionic/monoamniotic (one placenta, one amniotic sac)

GEM Conversion to ICD-10 CM

O30.019

Fs: 10000 – Twin pregnancy, monochorionic/monoamniotic, unspecified trimester

Sibling Codes

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