2026 ICD-10-CM Diagnosis Code O08.0Genital tract and pelvic infection following ectopic and molar pregnancy

ICD-10-CM Codes›O00-O9A›O00-O08›O08

ICD-10-CM O08.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O08.0 is a billable ICD-10-CM diagnosis code for genital tract and pelvic infection 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
O08.0
Billable Status
Yes — Valid for Submission
Code Describes
Genital tract and pelvic infection following ectopic and molar pregnancy
Short Description
Genitl trct and pelvic infct 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 CodeO08.0Genital tract and pelvic infection following ectopic and molar pregnancy

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O08.0.

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.

  • Endometritis following ectopic pregnancy
  • Endometritis following molar pregnancy
  • Fallopian tube infection
  • Genital tract infection due to and following ectopic pregnancy
  • Genital tract infection due to and following molar pregnancy
  • Infection of ovary
  • Parametritis
  • Parametritis following ectopic pregnancy
  • Parametritis following molar pregnancy
  • Pelvic infection due to and following ectopic pregnancy
  • Pelvic infection due to and following molar pregnancy
  • Pelvic peritonitis
  • Pelvic peritonitis following ectopic pregnancy
  • Pelvic peritonitis following molar pregnancy
  • Salpingitis due to ectopic pregnancy
  • Salpingitis following ectopic pregnancy
  • Salpingitis following molar pregnancy
  • Salpingo-oophoritis following ectopic pregnancy
  • Salpingo-oophoritis following molar pregnancy
  • Tetanus following ectopic pregnancy
  • Tetanus following molar pregnancy
  • Tubo-ovarian inflammatory disease

Tabular List NotesGuidance

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

Inclusion Terms

  • Endometritis following ectopic and molar pregnancy
  • Oophoritis following ectopic and molar pregnancy
  • Parametritis following ectopic and molar pregnancy
  • Pelvic peritonitis following ectopic and molar pregnancy
  • Salpingitis following ectopic and molar pregnancy
  • Salpingo-oophoritis following ectopic and molar pregnancy

Type 1 Excludes

  • sepsis following ectopic and molar pregnancy O08.82
  • urinary tract infection O08.83

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.

    • Abscess(connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
      • Bartholin's gland
        • with
          • ectopic or molar pregnancy
    • Abscess(connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
      • Bartholin's gland
        • following ectopic or molar pregnancy
    • Cellulitis(diffuse) (phlegmonous) (septic) (suppurative)
      • pelvis, pelvic (chronic)
        • following ectopic or molar pregnancy
    • Cervicitis(acute) (atrophic) (chronic) (nonvenereal) (senile) (subacute) (with ulceration)
      • with
        • ectopic pregnancy
    • Cervicitis(acute) (atrophic) (chronic) (nonvenereal) (senile) (subacute) (with ulceration)
      • with
        • molar pregnancy
    • Complication(s) (from) (of)
      • ectopic pregnancy
        • genital infection
    • Complication(s) (from) (of)
      • ectopic pregnancy
        • specified type NEC
    • Complication(s) (from) (of)
      • molar pregnancy NOS
        • genital infection
    • Complication(s) (from) (of)
      • molar pregnancy NOS
        • specified type NEC
    • Deciduitis(acute)
      • following ectopic or molar pregnancy
    • Endometritis(decidual) (nonspecific) (purulent) (senile) (atrophic) (suppurative)
      • with ectopic pregnancy
    • Endometritis(decidual) (nonspecific) (purulent) (senile) (atrophic) (suppurative)
      • following
        • ectopic or molar pregnancy
    • Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
      • gas (bacillus)
        • following
          • ectopic or molar pregnancy
    • Gas
      • gangrene
        • following
          • ectopic or molar pregnancy
    • Infection, infected, infective(opportunistic)
      • major
        • following ectopic or molar pregnancy
    • Lymphadenitis
      • with ectopic or molar pregnancy
    • Lymphadenitis
      • following ectopic or molar pregnancy
    • Lymphangitis
      • with
        • ectopic or molar pregnancy
    • Peritonitis(adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion)
      • with or following
        • diverticular disease (intestine)
          • ectopic or molar pregnancy
    • Peritonitis(adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion)
      • following ectopic or molar pregnancy
    • Phlebitis(infective) (pyemic) (septic) (suppurative)
      • pelvic
        • with ectopic or molar pregnancy
    • Phlebitis(infective) (pyemic) (septic) (suppurative)
      • pelvic
        • following ectopic or molar pregnancy
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • endometritis
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • genital tract and pelvic infection
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • infection
            • genital tract or pelvic
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • oophoritis
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • parametritis
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • pelvic peritonitis
    • Pregnancy(single) (uterine)
      • ectopic (ruptured)
        • complicated (by)
          • salpingitis or salpingo-oophoritis
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • endometritis
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • genital tract and pelvic infection
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • infection
            • genital tract or pelvic
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • oophoritis
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • parametritis
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • pelvic peritonitis
    • Pregnancy(single) (uterine)
      • molar NEC
        • complicated (by)
          • salpingitis or salpingo-oophoritis
    • Salpingo-oophoritis(catarrhal) (purulent) (ruptured) (septic) (suppurative)
      • acute
        • with ectopic or molar pregnancy
    • Salpingo-oophoritis(catarrhal) (purulent) (ruptured) (septic) (suppurative)
      • acute
        • following ectopic or molar pregnancy
    • Salpingo-oophoritis(catarrhal) (purulent) (ruptured) (septic) (suppurative)
      • following ectopic or molar pregnancy
    • Sepsis(generalized) (unspecified organism)
      • following
        • abortion (subsequent episode)
    • Tetanus, tetanic(cephalic) (convulsions)
      • with
        • ectopic or molar pregnancy
    • Tetanus, tetanic(cephalic) (convulsions)
      • following ectopic or molar pregnancy
    • Thrombophlebitis
      • pelvic
        • with ectopic or molar pregnancy
    • Thrombophlebitis
      • pelvic
        • following ectopic or molar pregnancy
    • Vaginitis(acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative)
      • with ectopic or molar pregnancy
    • Vaginitis(acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative)
      • following ectopic or molar pregnancy
    • Vulvitis(acute) (allergic) (atrophic) (hypertrophic) (intertriginous) (senile)
      • with ectopic or molar pregnancy
    • Vulvitis(acute) (allergic) (atrophic) (hypertrophic) (intertriginous) (senile)
      • following ectopic or molar pregnancy

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

  • Parametritis

    inflammation of the parametrium, the connective tissue of the pelvic floor, extending from the subserous coat of the uterus laterally between the layers of the broad ligament.

  • Broad Ligament

    a broad fold of peritoneum that extends from the side of the uterus to the wall of the pelvis.

  • Pelvic Peritonitis

    inflammation of the peritoneum surrounding the pelvic organs.

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 O08.0 to ICD-9-CMHistory

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

ICD-9-CM
639.0 Postabortion gu infect
Approximate The match is approximate rather than exact.

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 O08.0Overview

Is O08.0 (Complications following ectopic and molar pregnancy) a billable code?

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

Who can O08.0 be reported for?

The Medicare Code Editor checks genital tract and pelvic infection 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 O08.0?

Under the General Equivalence Mappings, genital tract and pelvic infection following ectopic and molar pregnancy converts to ICD-9-CM 639.0 (postabortion gu infect). The mapping is approximate, so confirm the match fits the documentation.

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.