A27
Non-billableLeptospirosis
Leptospirosis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Status
Non-billable / Header
Block
A20-A28
Child Codes
3
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
- code to identify resistance to antimicrobial drugs (Z16.-)
Child Codes (3)
Also Known As / Clinical Terms
UMLS
- Cane cutter's feverC0023364
- Harvest feverC0023364
- Infection due to LeptospiraC0023364
- Infection, LeptospiraC0023364
- Infections, LeptospiraC0023364
- Japanese autumnal feverC0023364
- Leptospira InfectionC0023364
- Leptospira InfectionsC0023364
- Leptospira infectionsC0023364
- LeptospirosesC0023364
- LeptospirosisC0023364
- Leptospirosis (disorder)C0023364
- Leptospirosis, unspecifiedC0023364
- Queensland feverC0023364
- Rice-field worker's diseaseC0023364
- Spirochaetal jaundiceC0023364
- Spirochetal jaundiceC0023364
- Stuttgart DiseaseC0023364
- Weil DiseaseC0023364
- fort bragg feverC0023364
- leptospirosesC0023364
- leptospirosisC0023364
- mud feverC0023364
- queensland feverC0023364
- red water feverC0023364
- spirochaetal jaundiceC0023364
- swamp feverC0023364
Frequently Asked Questions
What is ICD-10 code A27?
ICD-10-CM code A27 represents "Leptospirosis". It is a non-billable header code — use a more specific child code for billing purposes.
Is A27 a billable code?
No, A27 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under A27.
What chapter is A27 in?
A27 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A27?
A27 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters.
What are the subcategories under A27?
A27 has 3 child codes, including: A27.0 (Leptospirosis icterohemorrhagica), A27.8 (Other forms of leptospirosis), A27.9 (Leptospirosis, unspecified).
Are additional codes required with A27?
Yes, when using A27 you should also code: code to identify resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for A27?
A27 is linked to 1 UMLS Concept Unique Identifier: C0023364. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.