O30.04
Twin pregnancy, dichorionic/diamniotic
O30.04 is a non-billable ICD-10-CM code header for twin pregnancy, dichorionic/diamniotic. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are O30.041 Twin pregnancy, dichorionic/diamniotic, first trimester; O30.042 Twin pregnancy, dichorionic/diamniotic, second trimester; O30.043 Twin pregnancy, dichorionic/diamniotic, third trimester and O30.049 Twin pregnancy, dichorionic/diamniotic, unspecified trimester. Its coding notes include a Use additional code instruction, a Code also instruction, 1 Excludes1 entry and 4 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
The trimester character comes from the provider's documentation for the current encounter. The unspecified trimester code should rarely be used.
Use additional code
Add the listed code as a secondary code, if known.
Also from chapter/block level (1 note)
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
- any complications specific to multiple gestation
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Also from chapter/block level (1 note)
- supervision of normal pregnancy (Z34.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (4 notes)
Inclusion terms
Conditions classified to this code.
- Twin pregnancy, two placentae, two amniotic sacs
Notes
Also from chapter/block level (6 notes)
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry