2026 ICD-10-CM Diagnosis Code A06.0Acute amebic dysentery

ICD-10-CM Codes›A00–B99›A00-A09›A06

ICD-10-CM A06.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A06.0 is a billable ICD-10-CM diagnosis code for acute amebic dysentery. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 371 through 373. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Intestinal infection; and Parasitic, other specified and unspecified infections.

Code Identity

ICD-10-CM Code
A06.0
Billable Status
Yes — Valid for Submission
Code Describes
Acute amebic dysentery
Short Description
Acute amebic dysentery
Same as the full description in the CMS dataset.
Parent Code
A06
Amebiasis

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA00-A09Intestinal infectious diseases
CategoryA06Amebiasis
This CodeA06.0Acute amebic dysentery

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute amebiasis
  • Acute amebic dysentery
  • Acute amebic dysentery without abscess
  • Amebic colitis
  • Amebic dysentery
  • Colitis caused by protozoan
  • Dysenteric diarrhea
  • Entamoeba histolytica enteritis of intestine
  • Entamoeba histolytica enteritis of small intestine
  • Fulminant amebic colitis
  • Infection of intestine caused by Entamoeba histolytica
  • Infection of large intestine caused by Entamoeba histolytica
  • Parasitic infection causing colitis
  • Parasitic infection causing inflammation of small intestine
  • Protozoal enteritis of small intestine

Tabular List NotesGuidance

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

Inclusion Terms

  • Acute amebiasis
  • Intestinal amebiasis NOS

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.

    • Amebiasis
      • acute
    • Amebiasis
      • intestine
    • Colitis(acute) (catarrhal) (chronic) (noninfective) (hemorrhagic)
      • amebic (acute)
    • Diarrhea, diarrheal(disease) (infantile) (inflammatory)
      • amebic
    • Diarrhea, diarrheal(disease) (infantile) (inflammatory)
      • amebic
        • acute
    • Dysentery, dysenteric(catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)
      • amebic
    • Dysentery, dysenteric(catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)
      • amebic
        • acute
    • Enteritis(acute) (diarrheal) (hemorrhagic) (noninfective)
      • amebic (acute)
    • Proctitis
      • amebic (acute)

Clinical ClassificationClinical

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

CCSR DIG001
Intestinal infection
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR INF009
Parasitic, other specified and unspecified infections
Default principal diagnosis: inpatient No · outpatient No

Clinical InformationClinical

  • Amebic Colitis

    colitis resulting from amebic infection.

Patient EducationClinical

Diarrhea

Diarrhea is loose, watery stools (bowel movements). You have diarrhea if you have loose stools three or more times in one day. Acute diarrhea is diarrhea that lasts a short time. It is a common problem. It usually lasts about one or two days, but it may last longer. Then it goes away on its own.

The full article covers:

  • What is diarrhea?
  • What causes diarrhea?
  • Who is at risk for diarrhea?
  • What other symptoms might I have with diarrhea?
  • When do I need to see a health care provider for diarrhea?
  • How is the cause of diarrhea diagnosed?
  • What are the treatments for diarrhea?
  • Can diarrhea be prevented?

Read the full article at MedlinePlus

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

Convert A06.0 to ICD-9-CMHistory

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

ICD-9-CM
006.0 Ac amebiasis w/o abscess
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 A06.0Overview

Is A06.0 (Amebiasis) a billable code?

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

What MS-DRG does A06.0 group to?

When acute amebic dysentery is the principal diagnosis on an inpatient stay, it groups to MS-DRG 371, 372, 373, with relative weights from 0.7274 to 1.7731 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of A06.0?

Under the General Equivalence Mappings, acute amebic dysentery converts to ICD-9-CM 006.0 (ac amebiasis w/o abscess). 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.