All ICD10 Codes

A00-A09

Non-Billable
ChapterA00–B99
Rankblock
Official Description

Intestinal infectious diseases (A00-A09)

Use a more specific code (1 billable, 9 non-billable)
A00Cholerahas subcodesA01Typhoid and paratyphoid fevershas subcodesA02Other salmonella infectionshas subcodesA03Shigellosishas subcodesA04Other bacterial intestinal infectionshas subcodesA05Other bacterial foodborne intoxications, not elsewhere classifiedhas subcodesA06Amebiasishas subcodesA07Other protozoal intestinal diseaseshas subcodesA08Viral and other specified intestinal infectionshas subcodesA09Infectious gastroenteritis and colitis, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here. Use a different code.)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here. Code separately if applicable.)
  • carrier or suspected carrier of infectious disease (Z22.-)
  • 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
  • code to identify resistance to antimicrobial drugs (Z16.-)

Clinical Hierarchy

BillableHas subcodes
CH1Certain infectious and parasitic diseases (A00-B99)
A00-A09Intestinal infectious diseases (A00-A09)Not billable
A00CholeraSubcodes
A01Typhoid and paratyphoid feversSubcodes
A02Other salmonella infectionsSubcodes
A03ShigellosisSubcodes
A04Other bacterial intestinal infectionsSubcodes
A05Other bacterial foodborne intoxications, not elsewhere classifiedSubcodes
A06AmebiasisSubcodes
A07Other protozoal intestinal diseasesSubcodes
A08Viral and other specified intestinal infectionsSubcodes
A09Infectious gastroenteritis and colitis, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A00-A09:

chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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