A27 ICD-10-CM Code: Leptospirosis
A clear reference for the official code description, hierarchy, and related coding information from the April 2026 U.S. release.
Code definition
Official description
A27Leptospirosis
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where A27 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Certain zoonotic bacterial diseases (A20-A28)
- 3
Category A27
Leptospirosis
- 4
Code A27
Leptospirosis
More specific choices
Codes under A27
A27 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for A27.
Code first
No “code first” instruction is listed for A27.
Use additional code
No “use additional code” instruction is listed for A27.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for A27.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for A27.
Transparency
Source and release
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.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code A27 mean?
A27 is the April 2026 U.S. ICD-10-CM code for “Leptospirosis.”
Is A27 a billable or specific ICD-10-CM code?
No. A27 has more specific child codes in the April 2026 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is A27 located in ICD-10-CM?
A27 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Certain zoonotic bacterial diseases (A20-A28) (A20–A28), under category A27, Leptospirosis.
What coding notes are listed for A27?
No inclusion terms are listed for A27 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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