ICD-10 Code A27.8 – Other forms of leptospirosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A27.8 – Other forms of leptospirosis
What it is
A27.8 identifies leptospirosis cases that do not fit a more specific ICD-10 category. It refers to infection with Leptospira species when the documented presentation is “other” or otherwise not classified elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Leptospirosis may present with acute febrile illness, headache, myalgia, or jaundice, but you should code only what is documented and supported in the record.
When to use this code
Use A27.8 when the provider documents leptospirosis and specifies an atypical, mixed, or otherwise unclassified form. It is appropriate when the record does not support a more specific leptospirosis code. If the note names a different infectious diagnosis, do not default to this code.
Do not use for
Do not use this code for a more specific leptospirosis subtype when documentation supports one. Do not assign it for suspected infection, exposure only, or unrelated febrile illness without a confirmed diagnosis.
Coding tip
Check the provider’s exact wording; if the subtype is unclear, query for specificity before coding.