2026 ICD-10-CM Diagnosis Code O08.1Delayed or excessive hemorrhage following ectopic and molar pregnancy

ICD-10-CM Codes›O00-O9A›O00-O08›O08

ICD-10-CM O08.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O08.1 is a billable ICD-10-CM diagnosis code for delayed or excessive hemorrhage following ectopic and molar pregnancy. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is restricted by the Medicare Code Editor to maternity cases (age 9 through 64). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications following ectopic and/or molar pregnancy.

Code Identity

ICD-10-CM Code
O08.1
Billable Status
Yes — Valid for Submission
Code Describes
Delayed or excessive hemorrhage following ectopic and molar pregnancy
Short Description
Delayed or excess hemor fol ectopic and molar pregnancy
Parent Code
O08
Complications following ectopic and molar pregnancy

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO00-O08Pregnancy with abortive outcome
CategoryO08Complications following ectopic and molar pregnancy
This CodeO08.1Delayed or excessive hemorrhage following ectopic and molar pregnancy

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O08.1.

Maternity diagnoses
The Medicare Code Editor detects inconsistencies in maternity cases by checking a patient's age and any diagnosis on the patient's record. The maternity code edits apply to patients age ange is 9–64 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Afibrinogenemia
  • Afibrinogenemia following ectopic pregnancy
  • Afibrinogenemia following molar pregnancy
  • Defibrination syndrome following ectopic pregnancy
  • Defibrination syndrome following molar pregnancy
  • Delayed hemorrhage due to and following ectopic pregnancy
  • Delayed hemorrhage due to and following molar pregnancy
  • Excessive hemorrhage due to and following ectopic pregnancy
  • Excessive hemorrhage due to and following molar pregnancy
  • Intravascular hemolysis
  • Intravascular hemolysis following ectopic pregnancy
  • Intravascular hemolysis following molar pregnancy
  • Secondary hemorrhage

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Afibrinogenemia following ectopic and molar pregnancy
  • Defibrination syndrome following ectopic and molar pregnancy
  • Hemolysis following ectopic and molar pregnancy
  • Intravascular coagulation following ectopic and molar pregnancy

Type 1 Excludes

  • delayed or excessive hemorrhage due to incomplete abortion O03.1

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Afibrinogenemia
      • following ectopic or molar pregnancy
    • Blood
      • dyscrasia
        • with
          • ectopic pregnancy
    • Blood
      • dyscrasia
        • with
          • molar pregnancy
    • Blood
      • dyscrasia
        • following ectopic or molar pregnancy
    • Coagulation, intravascular(diffuse) (disseminated)
      • following ectopic or molar pregnancy
    • Complication(s) (from) (of)
      • ectopic pregnancy
        • hemorrhage (delayed) (excessive)
    • Complication(s) (from) (of)
      • molar pregnancy NOS
        • hemorrhage (delayed) (excessive)
    • Defect, defective
      • coagulation (factor)
        • with
          • ectopic pregnancy
    • Defect, defective
      • coagulation (factor)
        • with
          • molar pregnancy
    • Defibrination(syndrome)
      • following ectopic or molar pregnancy
    • Deficiency, deficient
      • coagulation NOS
        • with
          • ectopic pregnancy
    • Deficiency, deficient
      • coagulation NOS
        • with
          • molar pregnancy
    • Fibrinolysis(hemorrhagic) (acquired)
      • following
        • ectopic or molar pregnancy
    • Hemolysis
      • intravascular
        • with
          • ectopic or molar pregnancy
    • Hemorrhage, hemorrhagic(concealed)
      • delayed
        • following ectopic or molar pregnancy
    • Hemorrhage, hemorrhagic(concealed)
      • excessive, following ectopic gestation (subsequent episode)
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • afibrinogenemia
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • defibrination syndrome
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • hemorrhage (delayed) (excessive)
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • intravascular coagulation
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • afibrinogenemia
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • defibrination syndrome
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • hemorrhage (delayed) (excessive)
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • intravascular coagulation

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PRG007
Complications following ectopic and/or molar pregnancy
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Afibrinogenemia

    a deficiency or absence of fibrinogen in the blood.

  • Fibrinogen

    plasma glycoprotein clotted by thrombin, composed of a dimer of three non-identical pairs of polypeptide chains (alpha, beta, gamma) held together by disulfide bonds. fibrinogen clotting is a sol-gel change involving complex molecular arrangements: whereas fibrinogen is cleaved by thrombin to form polypeptides a and b, the proteolytic action of other enzymes yields different fibrinogen degradation products.

  • Afibrinogenemia

    a blood coagulation disorder characterized by the complete absence of fibrinogen in the blood, resulting in bleeding.

Patient EducationClinical

Ectopic Pregnancy

The uterus, or womb, is the place where a fetus grows during pregnancy. In an ectopic pregnancy, the fertilized egg grows in the wrong place outside the uterus. It usually occurs in the fallopian tubes. These tubes carry eggs from the ovaries to the uterus.

The full article covers:

  • What is an ectopic pregnancy?
  • What increases my risk of an ectopic pregnancy?
  • What are the symptoms of an ectopic pregnancy?
  • How is an ectopic pregnancy diagnosed?
  • What is the treatment for an ectopic pregnancy?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert O08.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
639.1 Postabortion hemorrhage
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About O08.1Overview

Is O08.1 (Complications following ectopic and molar pregnancy) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report delayed or excessive hemorrhage following ectopic and molar pregnancy on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Who can O08.1 be reported for?

The Medicare Code Editor checks delayed or excessive hemorrhage following ectopic and molar pregnancy against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of O08.1?

Under the General Equivalence Mappings, delayed or excessive hemorrhage following ectopic and molar pregnancy converts to ICD-9-CM 639.1 (postabortion hemorrhage). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.