A07.9

Billable

ChapterA00–B99

Ranksubcategory

Official Description

Protozoal intestinal disease, unspecified

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

Instructional Notes

Includes

Flagellate diarrhea
Protozoal colitis
Protozoal diarrhea
Protozoal dysentery

General instructions are available for the parent sections:

View CH1 Notes

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)

A00-A09Intestinal infectious diseases (A00-A09)

A07Other protozoal intestinal diseases

A07.9Protozoal intestinal disease, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A07.9:

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A07.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

10 raw paths

Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic)1 unique routes

protozoal→A07.9

Diarrhea, diarrheal (disease) (infantile) (inflammatory)2 unique routes

flagellate→A07.9

protozoal→A07.9

Disease, diseased2 unique routes

intestine

protozoal→A07.9

protozoal

intestine, intestinal→A07.9

Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)1 unique routes

protozoal→A07.9

Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)1 unique routes

protozoal→A07.9

Infection, infected, infective (opportunistic)2 unique routes

flagellate, intestinal→A07.9

protozoal NEC

intestinal→A07.9

Infestation1 unique routes

protozoal NEC

intestinal→A07.9

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 371

Major Gastrointestinal Disorders and Peritoneal Infections with MCC

DRG 372

Major Gastrointestinal Disorders and Peritoneal Infections with CC

DRG 373

Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Protozoal intestinal disease, unspecified.

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