ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesChapter 1: Certain infectious and parasitic diseasesA75.9

A75.9

Billable

Leptospirosis, unspecified

Chapter 1:Certain infectious and parasitic diseases

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A75.9 is a billable code used to indicate a diagnosis of leptospirosis, unspecified.

Key Diagnostic Point:

Leptospirosis is a bacterial infection caused by spirochetes of the genus Leptospira. It is primarily transmitted to humans through contact with water, soil, or food contaminated with the urine of infected animals, particularly rodents. The disease can manifest in a wide range of symptoms, from mild flu-like signs to severe illness, including liver damage, kidney failure, meningitis, or respiratory distress. The incubation period typically ranges from 5 to 14 days, and early diagnosis is crucial for effective treatment. In endemic areas, leptospirosis is often associated with occupational exposure, such as farming or sewage work, and can also occur in travelers visiting regions where the disease is prevalent. The clinical presentation may include fever, chills, myalgia, headache, and conjunctival suffusion. Severe cases can lead to Weil's disease, characterized by jaundice, renal failure, and hemorrhagic manifestations. Diagnosis is confirmed through serological tests or PCR. Given its potential for severe complications, timely recognition and treatment with antibiotics are essential.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of clinical presentations ranging from mild to severe.
  • Potential overlap with other febrile illnesses.
  • Need for specific laboratory confirmation for accurate diagnosis.
  • Travel history may complicate the clinical picture.

Audit Risk Factors

  • Inadequate documentation of travel history.
  • Failure to document laboratory confirmation.
  • Misclassification with other infectious diseases.
  • Lack of detailed symptom description.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, including travel and exposure history, laboratory results, and clinical symptoms.

Common Clinical Scenarios

Patients presenting with fever and myalgia after travel to endemic areas.

Billing Considerations

Ensure laboratory confirmation is documented to support the diagnosis.

Emergency Medicine

Documentation Requirements

Thorough documentation of presenting symptoms, travel history, and initial treatment provided.

Common Clinical Scenarios

Patients presenting with acute febrile illness after exposure to potentially contaminated water.

Billing Considerations

Rapid assessment and documentation are crucial for timely treatment.

Coding Guidelines

Inclusion Criteria

Use A75.9 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of symptoms, exposure history, and laboratory confirmation

Exclusion Criteria

Do NOT use A75.9 When
  • Exclude codes for other specific infectious diseases when coding A75

Related ICD-10 Codes

Related CPT Codes

87070CPT Code

Culture, bacterial, any source

Clinical Scenario

Used when bacterial culture is performed to confirm leptospirosis.

Documentation Requirements

Document the reason for culture and results.

Specialty Considerations

Infectious disease specialists should ensure cultures are properly documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of leptospirosis, improving the accuracy of epidemiological data and facilitating better tracking of the disease.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of leptospirosis, improving the accuracy of epidemiological data and facilitating better tracking of the disease.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of leptospirosis, improving the accuracy of epidemiological data and facilitating better tracking of the disease.

Resources

Clinical References

  • •
    CDC Leptospirosis Information

Coding & Billing References

  • •
    CDC Leptospirosis Information

Frequently Asked Questions

What are the common symptoms of leptospirosis?

Common symptoms include fever, chills, myalgia, headache, conjunctival suffusion, and in severe cases, jaundice and renal failure.

How is leptospirosis diagnosed?

Diagnosis is typically made through serological tests or PCR to confirm the presence of Leptospira bacteria.

What is the treatment for leptospirosis?

Treatment usually involves antibiotics such as doxycycline or penicillin, especially in severe cases.