2027 ICD-10-CM Diagnosis Code A07Other protozoal intestinal diseases

ICD-10-CM Codes›A00–B99›A00-A09›A07

ICD-10-CM A07
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A07 is a non-billable ICD-10-CM category code for other protozoal intestinal diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A07.0, A07.1, A07.2, and A07.3.

Code Identity

ICD-10-CM Code
A07
Billable Status
No — Non-Billable Category
Code Describes
Other protozoal intestinal diseases
Short Description
Other protozoal intestinal diseases
Same as the full description in the CMS dataset.
Chapter
A00-A09
Intestinal infectious diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA00-A09Intestinal infectious diseases
CategoryA07Other protozoal intestinal diseases
This CodeA07Other protozoal intestinal diseases

Specific Coding for Other protozoal intestinal diseasesOverview

Non-specific codes like A07 require more characters. Use one of these billable codes instead:

  • Use A07.0 for Balantidiasis

  • Use A07.1 for Giardiasis [lambliasis]

  • Use A07.2 for Cryptosporidiosis

  • Use A07.3 for Isosporiasis

  • Use A07.4 for Cyclosporiasis

  • Use A07.8 for Other specified protozoal intestinal diseases

  • Use A07.9 for Protozoal intestinal disease, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A07: its own notes plus those printed at 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 Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

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 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 A07, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming A07: they are not reported together with it, unless the two conditions are unrelated.

  • A06 Amebiasis
    other protozoal intestinal diseases (A07.-)
  • Block B50-B64 Protozoal diseases
    other protozoal intestinal diseases (A07.-)

Excludes2 2

These codes carry an Excludes2 note naming A07: 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

Patient EducationClinical

Gastroenteritis

Gastroenteritis is an inflammation of the lining of the stomach and intestines. The main symptoms include vomiting and diarrhea. It is usually not serious in healthy people, but it can sometimes lead to dehydration or cause severe symptoms.

The full article covers:

  • What is gastroenteritis?
  • What causes gastroenteritis?
  • What are the symptoms of gastroenteritis?
  • How is gastroenteritis diagnosed?
  • What are the treatments for gastroenteritis?
  • Can gastroenteritis be prevented?

Read the full article at MedlinePlus

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

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 A07Overview

What is the ICD-10 code for other protozoal intestinal diseases?

A07 is the ICD-10-CM category for other protozoal intestinal diseases, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is A07 (Other protozoal intestinal diseases) a billable code?

No. This is a category header that groups the codes for other protozoal intestinal diseases, and headers cannot be submitted on claims. Claims for other protozoal intestinal diseases need a more specific code from this category, such as A07.0, A07.1, and A07.2.