O30.039 Twin pregnancy, monochorionic/diamniotic, unspecified trimester

Billable ICD-10-CM code, FY2026.

Applies from O30 Multiple gestation

Code also

• any complications specific to multiple gestation

Applies from O30.03 Twin pregnancy, monochorionic/diamniotic

Applicable to

• Twin pregnancy, one placenta, two amniotic sacs

MS-DRG index

Defines the logic of DRG(s) 817-819 in MDC 14.

Approximate ICD-9-CM (GEMs)

• 651.00 Twin pregnancy, unspecified as to episode of care or not applicable (approximate)
• V91.02 Twin gestation, monochorionic/diamniotic (one placenta, two amniotic sacs) (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Maternity diagnoses (age 9 through 64): Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.

Nearby codes

• O30.029 Conjoined twin pregnancy, unspecified trimester
• O30.03 Twin pregnancy, monochorionic/diamniotic
• O30.031 Twin pregnancy, monochorionic/diamniotic, first trimester
• O30.032 Twin pregnancy, monochorionic/diamniotic, second trimester
• O30.033 Twin pregnancy, monochorionic/diamniotic, third trimester
• O30.039 Twin pregnancy, monochorionic/diamniotic, unspecified trimester (this code)
• O30.04 Twin pregnancy, dichorionic/diamniotic
• O30.041 Twin pregnancy, dichorionic/diamniotic, first trimester
• O30.042 Twin pregnancy, dichorionic/diamniotic, second trimester
• O30.043 Twin pregnancy, dichorionic/diamniotic, third trimester
• O30.049 Twin pregnancy, dichorionic/diamniotic, unspecified trimester