All ICD10 Codes

A01

Non-Billable
ChapterA00–B99
Rankcategory
Official Description

Typhoid and paratyphoid fevers

Use a more specific code (4 billable, 1 non-billable)
A01.0Typhoid feverhas subcodesA01.1Paratyphoid fever AA01.2Paratyphoid fever BA01.3Paratyphoid fever CA01.4Paratyphoid fever, 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)
A01Typhoid and paratyphoid feversNot billable
A01.0Typhoid feverSubcodes
A01.1Paratyphoid fever ABillable
A01.2Paratyphoid fever BBillable
A01.3Paratyphoid fever CBillable
A01.4Paratyphoid fever, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A01:

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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