A04.4

Billable
ChapterA00–B99
Ranksubcategory
Official Description

Other intestinal Escherichia coli infections

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
  • Escherichia coli enteritis NOS
General instructions are available for the parent sections:
View CH1 NotesView A04 Notes

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)
A00-A09Intestinal infectious diseases (A00-A09)
A04Other bacterial intestinal infections
A04.4Other intestinal Escherichia coli infections

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A04.4:

categoryA04
Other bacterial intestinal infections
View context instructions
chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A04.4. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

6 raw paths
Diarrhea, diarrheal (disease) (infantile) (inflammatory)3 unique routes
due to(3 variants)
Escherichia coli→A04.4(3 variants)
enteroaggregative→A04.4
specified NEC→A04.4
Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)3 unique routes
infectious NOS(3 variants)
due to(3 variants)
Escherichia coli→A04.4(3 variants)
enteroaggregative→A04.4
specified NEC→A04.4

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

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Find surgical and procedural codes related to Other intestinal Escherichia coli infections.

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