ICD-10-CM 2027
ICD-10 code for antepartum with hemorrhage
Antepartum hemorrhage, unspecified, unspecified trimester
From the official ICD-10-CM alphabetic index entry “Hemorrhage, hemorrhagic (concealed) › antepartum (with)”. Page updated September 29, 2026.
About coding antepartum with hemorrhage
The ICD-10-CM code for antepartum with hemorrhage is O46.90 (Antepartum hemorrhage, unspecified, unspecified trimester). The official index lists 10 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on O46.90.
Within O46.9, choose O46.90 (unspecified trimester) only when documentation doesn't support a more specific option: first trimester (O46.91), second trimester (O46.92) and third trimester (O46.93).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 817 (Other Antepartum Diagnoses with O.R. Procedures with MCC, relative weight 2.0534), DRG 818 (Other Antepartum Diagnoses with O.R. Procedures with CC, relative weight 1.2942), DRG 819 (Other Antepartum Diagnoses with O.R. Procedures without CC/MCC, relative weight 0.7739), DRG 831 (Other Antepartum Diagnoses without O.R. Procedures with MCC, relative weight 1.1558), DRG 832 (Other Antepartum Diagnoses without O.R. Procedures with CC, relative weight 0.7585) and DRG 833 (Other Antepartum Diagnoses without O.R. Procedures without CC/MCC, relative weight 0.5002), in MDC 14 (Pregnancy, Childbirth and the Puerperium), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific antepartum with hemorrhage codes (official index)
- with coagulation defect O46.00 — Antepartum hemorrhage with coagulation defect, unspecified
- afibrinogenemia O46.01 — Antepartum hemorrhage with afibrinogenemia
- disseminated intravascular coagulation O46.02 — Antepartum hemorrhage with disseminated intravascular coagulation
- hypofibrinogenemia O46.01 — Antepartum hemorrhage with afibrinogenemia
- specified defect NEC O46.09 — Antepartum hemorrhage with other coagulation defect
- before 20 weeks gestation O20.9 — Hemorrhage in early pregnancy, unspecified
- specified type NEC O20.8 — Other hemorrhage in early pregnancy
- threatened abortion O20.0 — Threatened abortion
- due to
- abruptio placenta O45.9 — Premature separation of placenta, unspecified
- leiomyoma, uterus
- placenta previa O44.1 — Complete placenta previa with hemorrhage
- specified cause NEC
Common questions about antepartum with hemorrhage ICD-10 codes
What is the ICD-10 code for antepartum with hemorrhage?
- O46.90 — Antepartum hemorrhage, unspecified, unspecified trimester. More specific codes apply when the documentation supports them: O46.00, O46.01, O46.02, O46.01 and others below.
What is the ICD-10 code for before 20 weeks gestation antepartum with hemorrhage?
- O20.9 — Hemorrhage in early pregnancy, unspecified.
Is O46.90 billable?
- Yes. O46.90 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can O46.90 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict O46.90 as a principal diagnosis.
Is O46.90 a CC or MCC?
- No. O46.90 is neither a CC nor an MCC under MS-DRG v44.0.