2026 ICD-10-CM Diagnosis Code A48.52Wound botulism

ICD-10-CM Codes›A00–B99›A30-A49›A48

ICD-10-CM A48.52
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A48.52 is a billable ICD-10-CM diagnosis code for wound botulism. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 867 through 869. Coders also document this condition as infection caused by Clostridium botulinum. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections.

Code Identity

ICD-10-CM Code
A48.52
Billable Status
Yes — Valid for Submission
Code Describes
Wound botulism
Short Description
Wound botulism
Same as the full description in the CMS dataset.
Parent Code
A48.5
Other specified botulism

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA30-A49Other bacterial diseases
CategoryA48Other bacterial diseases, not elsewhere classified
This CodeA48.52Wound botulism

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Infection caused by Clostridium botulinum
  • Inhalational botulism
  • Poisoning caused by Clostridium botulinum toxin
  • Post-traumatic wound infection
  • Wound botulism

Tabular List NotesGuidance

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

Inclusion Terms

  • Non-foodborne botulism NOS

Use Additional Code

  • code for associated wound

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.

    • Botulism(foodborne intoxication)
      • non-foodborne
    • Botulism(foodborne intoxication)
      • wound
    • Infection, infected, infective(opportunistic)
      • Clostridium NEC
        • botulinum (food poisoning)
          • wound

Clinical ClassificationClinical

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

CCSR INF003
Bacterial infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Wound Botulism

    botulism that is caused by toxin that is produced in a wound contaminated with clostridium botulinum.

Patient EducationClinical

Botulism

Botulism is a rare but serious illness. The cause is a toxin (poison) made by a bacterium called Clostridium botulinum. It occurs naturally in soil.

Read the full article at MedlinePlus

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

Convert A48.52 to ICD-9-CMHistory

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

ICD-9-CM
040.42 Wound botulism
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 A48.52Overview

Is A48.52 (Other specified botulism) a billable code?

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

What MS-DRG does A48.52 group to?

When wound botulism is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 868, 869, with relative weights from 0.7297 to 2.0932 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of A48.52?

Under the General Equivalence Mappings, wound botulism converts to ICD-9-CM 040.42 (wound botulism). 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.