A21 ICD-10-CM Code: Tularemia
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
A21Tularemia
ICD-10-CM diagnosis code · United States clinical modification
Where A21 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Certain zoonotic bacterial diseases (A20-A28)
- 3
Category A21
Tularemia
- 4
Code A21
Tularemia
Codes under A21
A21 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for A21.
Code first
No “code first” instruction is listed for A21.
Use additional code
No “use additional code” instruction is listed for A21.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for A21.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for A21.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code A21 mean?
A21 is the FY 2027 U.S. ICD-10-CM code for “Tularemia.”
Is A21 a billable or specific ICD-10-CM code?
No. A21 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is A21 located in ICD-10-CM?
A21 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Certain zoonotic bacterial diseases (A20-A28) (A20–A28), under category A21, Tularemia.
What coding notes are listed for A21?
No inclusion terms are listed for A21 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.