O04.6 Delayed or excessive hemorrhage following (induced) termination of pregnancy

The ICD-10-CM code for Delayed or excessive hemorrhage following (induced) termination of pregnancy is O04.6 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

15: Pregnancy, childbirth and the puerperium (O00-O9A)

Section

O00-O08: Pregnancy with abortive outcome (O00-O08)

Category O04

15 codes (13 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to O04.6:

• Abortion (complete) (spontaneous) › induced (encounter for) › complicated by › defibrination syndrome
• Abortion (complete) (spontaneous) › induced (encounter for) › complicated by › afibrinogenemia
• Abortion (complete) (spontaneous) › induced (encounter for) › complicated by › hemolysis
• Abortion (complete) (spontaneous) › induced (encounter for) › complicated by › hemorrhage (delayed) (excessive)
• Abortion (complete) (spontaneous) › induced (encounter for) › complicated by › intravascular coagulation

Inclusion Terms

• Afibrinogenemia following (induced) termination of pregnancy
• Defibrination syndrome following (induced) termination of pregnancy
• Hemolysis following (induced) termination of pregnancy
• Intravascular coagulation following (induced) termination of pregnancy

U.S. Hospital Utilization

• An estimated 430 U.S. inpatient stays in 2023 included O04.6 among the documented diagnoses.
• 130 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Hemorrhage post elective abortion—use O04.6; do not use O72.1

For hemorrhage post elective abortion, assign code O04.6, Delayed or excessive hemorrhage following (induced) termination of pregnancy. Do not assign code O72.1, Other immediate postpartum hemorrhage, as this code should not be assigned for post abortion conditions.

Z3A—do not assign for O00-O08, Z33.2, or postpartum conditions

Category Z3A codes should not be assigned for pregnancies with abortive outcomes (categories O00- O08), elective termination of pregnancy (code Z33.2), nor for postpartum conditions, as category Z3A is not applicable to these conditions.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)