All ICD10 Codes

A30-A49

Non-Billable
ChapterA00–B99
Rankblock
Official Description

Other bacterial diseases (A30-A49)

Use a more specific code (4 billable, 14 non-billable)
A30Leprosy [Hansen's disease]has subcodesA31Infection due to other mycobacteriahas subcodesA32Listeriosishas subcodesA33Tetanus neonatorumA34Obstetrical tetanusA35Other tetanusA36Diphtheriahas subcodesA37Whooping coughhas subcodesA38Scarlet feverhas subcodesA39Meningococcal infectionhas subcodesA40Streptococcal sepsishas subcodesA41Other sepsishas subcodesA42Actinomycosishas subcodesA43Nocardiosishas subcodesA44Bartonellosishas subcodesA46ErysipelasA48Other bacterial diseases, not elsewhere classifiedhas subcodesA49Bacterial infection of unspecified sitehas subcodes
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)
A30-A49Other bacterial diseases (A30-A49)Not billable
A30Leprosy [Hansen's disease]Subcodes
A31Infection due to other mycobacteriaSubcodes
A32ListeriosisSubcodes
A33Tetanus neonatorumBillable
A34Obstetrical tetanusBillable
A35Other tetanusBillable
A36DiphtheriaSubcodes
A37Whooping coughSubcodes
A38Scarlet feverSubcodes
A39Meningococcal infectionSubcodes
A40Streptococcal sepsisSubcodes
A41Other sepsisSubcodes
A42ActinomycosisSubcodes
A43NocardiosisSubcodes
A44BartonellosisSubcodes
A46ErysipelasBillable
A48Other bacterial diseases, not elsewhere classifiedSubcodes
A49Bacterial infection of unspecified siteSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A30-A49:

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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