2026 ICD-10-CM Diagnosis Code O03.37Sepsis following incomplete spontaneous abortion
ICD-10-CM Codes›O00-O9A›O00-O08›O03
- Billable — Valid for Submission
- Not Chronic
O03.37 is a billable ICD-10-CM diagnosis code for sepsis following incomplete 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). Coders also document this condition as sepsis due to incomplete miscarriage. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Septicemia and Spontaneous abortion and complications of spontaneous abortion.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O03.37.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Sepsis due to incomplete miscarriage
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Use Additional Code
Type 1 Excludes
- septic or septicopyemic embolism following incomplete spontaneous abortion O03.2
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional 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
- incomplete (spontaneous) - O03.4
- complicated (by) (following) - O03.30
- sepsis - O03.37
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Abortion(complete) (spontaneous)
- incomplete (spontaneous)
- complicated (by) (following)
- sepsis
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 O03.37 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About O03.37Overview
Is O03.37 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report sepsis following incomplete spontaneous abortion on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Who can O03.37 be reported for?
The Medicare Code Editor checks sepsis following incomplete 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 O03.37?
Under the General Equivalence Mappings, sepsis following incomplete spontaneous abortion converts to ICD-9-CM 634.01 (spon abor w pelv inf-inc). 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.
