2026 ICD-10-CM Diagnosis Code A07.2Cryptosporidiosis

ICD-10-CM Codes›A00–B99›A00-A09›A07

ICD-10-CM A07.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A07.2 is a billable ICD-10-CM diagnosis code for cryptosporidiosis. 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
A07.2
Billable Status
Yes — Valid for Submission
Code Describes
Cryptosporidiosis
Short Description
Cryptosporidiosis
Same as the full description in the CMS dataset.
Parent Code
A07
Other protozoal intestinal diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA00-A09Intestinal infectious diseases
CategoryA07Other protozoal intestinal diseases
This CodeA07.2Cryptosporidiosis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic intestinal cryptosporidiasis
  • Coccidiosis co-occurrent with human immunodeficiency virus infection
  • Colitis caused by Cryptosporidium
  • Colitis caused by protozoan
  • Cryptosporidial enteritis of intestine
  • Cryptosporidial enteritis of small intestine
  • Cryptosporidial gastroenteritis
  • Cryptosporidiosis
  • Disease caused by Cryptosporidiidae
  • Gastritis caused by Cryptosporidium
  • Infection by Cryptosporidium
  • Infection by Cryptosporidium crotalis
  • Infection by Cryptosporidium meleagridis
  • Infection by Cryptosporidium muris
  • Infection by Cryptosporidium nasorum
  • Infection by Cryptosporidium parvum
  • Infection caused by Cryptosporidium co-occurrent with human immunodeficiency virus infection
  • Parasitic infection causing colitis
  • Parasitic infection causing inflammation of small intestine
  • Protozoal enteritis of small intestine

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.

    • Cryptosporidiosis
    • Diarrhea, diarrheal(disease) (infantile) (inflammatory)
      • due to
        • Cryptosporidium
    • Gastroenteritis(acute) (chronic) (noninfectious)
      • due to
        • Cryptosporidium
    • Infection, infected, infective(opportunistic)
      • Cryptosporidium

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

  • Cryptosporidiosis

    intestinal infection with organisms of the genus cryptosporidium. it occurs in both animals and humans. symptoms include severe diarrhea.

  • Cryptosporidial Gastroenteritis

    gastroenteritis that is caused by cryptosporidium.

Patient EducationClinical

Cryptosporidiosis

Cryptosporidiosis is a contagious disease that causes watery diarrhea. It is caused by parasites called Cryptosporidium, or Crypto . These parasites live in soil, food, and water. They are found in every region of the United States and throughout the world.

The full article covers:

  • What is cryptosporidiosis?
  • How is cryptosporidiosis spread?
  • Who is more likely to get cryptosporidiosis?
  • What are the symptoms of cryptosporidiosis?
  • How is cryptosporidiosis diagnosed?
  • What are the treatments for cryptosporidiosis?
  • Can cryptosporidiosis be prevented?

Read the full article at MedlinePlus

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

Convert A07.2 to ICD-9-CMHistory

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

ICD-9-CM
007.4 Cryptosporidiosis
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 A07.2Overview

Is A07.2 (Other protozoal intestinal diseases) a billable code?

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

What MS-DRG does A07.2 group to?

When cryptosporidiosis 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 A07.2?

Under the General Equivalence Mappings, cryptosporidiosis converts to ICD-9-CM 007.4 (cryptosporidiosis). 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.