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A27 ⚠ Non-billable

Leptospirosis

ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases

Code
A27
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code A27?
ICD-10-CM code A27 represents Leptospirosis. It is a non-billable header code requiring a more specific subcategory in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A27 billable?
No. A27 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is A27 in?
A27 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.

Related codes in the A27 category

A27.0 Leptospirosis icterohemorrhagica Billable A27.8 Other forms of leptospirosis Non-billable A27.9 Leptospirosis, unspecified Billable A27.81 Aseptic meningitis in leptospirosis Billable A27.89 Other forms of leptospirosis Billable

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