2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A06.0 is a billable ICD-10-CM diagnosis code for acute amebic dysentery. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 371 through 373. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 3 closely related codes. 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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A06.0: its own notes plus those printed at A06 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From A06 Amebiasis applies to 12 codes
  • infection due to Entamoeba histolytica
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Acute amebiasis
  • Intestinal amebiasis NOS

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From A06 Amebiasis applies to 12 codes
  • other protozoal intestinal diseases (A07.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From A06 Amebiasis applies to 12 codes
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name A06.0, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming A06.0: they are not reported together with it, unless the two conditions are unrelated.

Excludes2 2

These codes carry an Excludes2 note naming A06.0: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block P35-P39 Infections specific to the perinatal period
    intestinal infectious disease (A00-A09) names A00-A09, which includes this code
  • P37 Other congenital infectious and parasitic diseases
    infectious neonatal diarrhea (A00-A09) names A00-A09, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

  • Amebiasis

    infection with any of various amebae. it is an asymptomatic carrier state in most individuals, but diseases ranging from chronic, mild diarrhea to fulminant dysentery may occur.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A06.0Overview

What is the ICD-10 code for acute amebic dysentery?

The ICD-10-CM code for acute amebic dysentery is A06.0 (sometimes written as A060). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

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 372, 371, 373, with relative weights from 0.6945 to 1.7087 depending on complications. Higher weights mean higher Medicare reimbursement.

Is A06.0 a CC or MCC?

CMS lists A06.0 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 3 closely related codes in its exclusion list.

Can A06.0 be reported with a code from A07?

Not as a rule. The Excludes1 note at A06, which applies to A06.0, lists "other protozoal intestinal diseases (A07.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).