All ICD10 Codes

A21

Non-Billable
ChapterA00–B99
Rankcategory
Official Description

Tularemia

Use a more specific code (7 billable)
A21.0Ulceroglandular tularemiaA21.1Oculoglandular tularemiaA21.2Pulmonary tularemiaA21.3Gastrointestinal tularemiaA21.7Generalized tularemiaA21.8Other forms of tularemiaA21.9Tularemia, 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.-)

Instructional Notes

Includes
  • deer-fly fever
  • infection due to Francisella tularensis
  • rabbit fever

Clinical Hierarchy

BillableHas subcodes
CH1Certain infectious and parasitic diseases (A00-B99)
A20-A28Certain zoonotic bacterial diseases (A20-A28)
A21TularemiaNot billable
A21.0Ulceroglandular tularemiaBillable
A21.1Oculoglandular tularemiaBillable
A21.2Pulmonary tularemiaBillable
A21.3Gastrointestinal tularemiaBillable
A21.7Generalized tularemiaBillable
A21.8Other forms of tularemiaBillable
A21.9Tularemia, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A21:

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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