ICD-10-CM Codes
A00-B99 Certain infectious and parasitic diseases
A20-A28 Certain zoonotic bacterial diseases
A21- Tularemia
2020 ICD-10-CM Diagnosis Code A21.3

2020 ICD-10-CM Diagnosis Code A21.3

Gastrointestinal tularemia

2016

2017

2018

2019

2020

Billable/Specific Code

A21.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2020 edition of ICD-10-CM A21.3 became effective on October 1, 2019.
This is the American ICD-10-CM version of A21.3 - other international versions of ICD-10 A21.3 may differ.

Applicable To

Abdominal tularemia

The following code(s) above A21.3 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to A21.3:

A00-B99
2020 ICD-10-CM Range A00-B99
Certain infectious and parasitic diseases
Includes
- diseases generally recognized as communicable or transmissible
Type 1 Excludes
- certain localized infections - see body system-related chapters
Type 2 Excludes
- 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 to identify resistance to antimicrobial drugs (Z16.-)
Certain infectious and parasitic diseases
A21
ICD-10-CM Diagnosis Code A21
Tularemia
Includes
- deer-fly fever
- infection due to Francisella tularensis
- rabbit fever
Tularemia

Approximate Synonyms

Enteric tularemia

ICD-10-CM A21.3 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):

371 Major gastrointestinal disorders and peritoneal infections with mcc
372 Major gastrointestinal disorders and peritoneal infections with cc
373 Major gastrointestinal disorders and peritoneal infections without cc/mcc

Convert A21.3 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to A21.3:

Ingestion
- tularemia A21.3
Tularemia A21.9
ICD-10-CM Diagnosis Code A21.9
Tularemia, unspecified
- abdominal A21.3
- cryptogenic A21.3
- enteric A21.3
- gastrointestinal A21.3
- ingestion A21.3
- intestinal A21.3

ICD-10-CM Codes Adjacent To A21.3

A20.1 Cellulocutaneous plague

A20.2 Pneumonic plague

A20.3 Plague meningitis

A20.7 Septicemic plague

A20.8 Other forms of plague

A20.9 Plague, unspecified

A21 Tularemia

A21.0 Ulceroglandular tularemia

A21.1 Oculoglandular tularemia

A21.2 Pulmonary tularemia

A21.3 Gastrointestinal tularemia

A21.7 Generalized tularemia

A21.8 Other forms of tularemia

A21.9 Tularemia, unspecified

A22 Anthrax

A22.0 Cutaneous anthrax

A22.1 Pulmonary anthrax

A22.2 Gastrointestinal anthrax

A22.7 Anthrax sepsis

A22.8 Other forms of anthrax

A22.9 Anthrax, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2020 ICD-10-CM Diagnosis Code A21.3

Gastrointestinal tularemia

Certain infectious and parasitic diseases

Tularemia

Tularemia, unspecified