2026 ICD-10-CM Diagnosis Code A34Obstetrical tetanus

ICD-10-CM Codes›A00–B99›A30-A49›A34

ICD-10-CM A34
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A34 is a billable ICD-10-CM diagnosis code for obstetrical tetanus. 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 induced termination of pregnancy complicated by infectious disease. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections and Complications specified during childbirth.

Code Identity

ICD-10-CM Code
A34
Billable Status
Yes — Valid for Submission
Code Describes
Obstetrical tetanus
Chapter
A30-A49
Other bacterial diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA30-A49Other bacterial diseases
CategoryA34Obstetrical tetanus
This CodeA34Obstetrical tetanus

Code EditsBilling

Medicare Code Editor checks that affect claim validity for A34.

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.

  • Induced termination of pregnancy complicated by infectious disease
  • Induced termination of pregnancy complicated by tetanus
  • Localized tetanus
  • Obstetrical tetanus
  • Puerperal tetanus
  • Tetanus following ectopic pregnancy
  • Tetanus following molar pregnancy

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.

    • Puerperal, puerperium(complicated by, complications)
      • tetanus
    • Tetanus, tetanic(cephalic) (convulsions)
      • with
        • abortion
    • Tetanus, tetanic(cephalic) (convulsions)
      • obstetrical
    • Tetanus, tetanic(cephalic) (convulsions)
      • puerperal, postpartum, childbirth

Clinical ClassificationClinical

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

CCSR INF003
Bacterial infections
Default principal diagnosis: inpatient No · outpatient No
CCSR PRG023
Complications specified during childbirth
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Infections and Pregnancy

During pregnancy, some common infections such as the common cold or a skin infection do not usually cause serious problems. Some infections, such as the flu, can be more severe when you're pregnant. But other infections can be harmful to you, your fetus, or both.

The full article covers:

  • How can infections affect your pregnancy?
  • What infections can be harmful during pregnancy?
  • What are the symptoms of an infection during pregnancy?
  • What are the treatments for infections during pregnancy?
  • Can infections during pregnancy be prevented?

Read the full article at MedlinePlus

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

Convert A34 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 A34Overview

Is A34 (Obstetrical tetanus) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report obstetrical tetanus on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Who can A34 be reported for?

The Medicare Code Editor checks obstetrical tetanus 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 A34?

Under the General Equivalence Mappings, obstetrical tetanus 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.