2026 ICD-10-CM Diagnosis Code O03.5Genital tract and pelvic infection following complete or unspecified spontaneous abortion
ICD-10-CM Codes›O00-O9A›O00-O08›O03
- Billable — Valid for Submission
- Not Chronic
O03.5 is a billable ICD-10-CM diagnosis code for genital tract and pelvic infection following complete or unspecified spontaneous abortion. 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 Spontaneous abortion and complications of spontaneous abortion.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O03.5.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Complete inevitable miscarriage complicated by genital tract and pelvic infection
- Complete miscarriage
- Complete miscarriage with genital tract or pelvic infection
- Female genital tract infection due to complete miscarriage
- Inevitable miscarriage
- Inevitable miscarriage complete
- Miscarriage complicated by genital-pelvic infection
- Miscarriage with endometritis
- Miscarriage with parametritis
- Miscarriage with pelvic peritonitis
- Miscarriage with salpingitis
- Miscarriage with salpingo-oophoritis
- Parametritis
- Pelvic peritonitis
- Postabortal pelvic inflammatory disease
- Tubo-ovarian inflammatory disease
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Endometritis following complete or unspecified spontaneous abortion
- Oophoritis following complete or unspecified spontaneous abortion
- Parametritis following complete or unspecified spontaneous abortion
- Pelvic peritonitis following complete or unspecified spontaneous abortion
- Salpingitis following complete or unspecified spontaneous abortion
- Salpingo-oophoritis following complete or unspecified spontaneous abortion
Type 1 Excludes
- sepsis following complete or unspecified spontaneous abortion O03.87
- urinary tract infection following complete or unspecified spontaneous abortion O03.88
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Abortion (complete) (spontaneous) - O03.9
- complicated (by) (following) - O03.80
- endometritis - O03.5
- genital tract and pelvic infection - O03.5
- genital tract or pelvic - O03.5
- oophoritis - O03.5
- parametritis - O03.5
- pelvic peritonitis - O03.5
- salpingitis or salpingo-oophoritis - O03.5
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Abortion(complete) (spontaneous)
- complicated (by) (following)
- endometritis
- Abortion(complete) (spontaneous)
- complicated (by) (following)
- genital tract and pelvic infection
- Abortion(complete) (spontaneous)
- complicated (by) (following)
- infection
- genital tract or pelvic
- Abortion(complete) (spontaneous)
- complicated (by) (following)
- oophoritis
- Abortion(complete) (spontaneous)
- complicated (by) (following)
- parametritis
- Abortion(complete) (spontaneous)
- complicated (by) (following)
- pelvic peritonitis
- Abortion(complete) (spontaneous)
- complicated (by) (following)
- salpingitis or salpingo-oophoritis
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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
Miscarriage
A miscarriage is an unexpected loss of pregnancy before the 20th week. Most miscarriages happen very early in the pregnancy, often before a woman even knows she is pregnant.
The full article covers:
- What is a miscarriage?
- What causes a miscarriage?
- What are the signs of a miscarriage?
- How is a miscarriage diagnosed?
- What is the treatment for a miscarriage?
- Can a miscarriage be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert O03.5 to ICD-9-CMHistory
Code HistoryHistory
Questions About O03.5Overview
Is O03.5 (Spontaneous abortion) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report genital tract and pelvic infection following complete or unspecified spontaneous abortion on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Who can O03.5 be reported for?
The Medicare Code Editor checks genital tract and pelvic infection following complete or unspecified spontaneous abortion 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 O03.5?
Under the General Equivalence Mappings, genital tract and pelvic infection following complete or unspecified spontaneous abortion converts to ICD-9-CM 634.00 (spon abor w pel inf-unsp) and 634.02 (spon abor w pel inf-comp). 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.
