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 CodesA43.8

A43.8

Other forms of endocarditis

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

Code Description

ICD-10 A43.8 is a billable code used to indicate a diagnosis of other forms of endocarditis.

Key Diagnostic Point:

Endocarditis is an infection of the inner lining of the heart chambers and valves, often caused by bacteria, fungi, or other pathogens. A43.8 specifically refers to other forms of endocarditis that do not fall under the more common classifications such as bacterial or fungal endocarditis. This code is particularly relevant in cases involving opportunistic infections in immunocompromised patients, such as those with HIV/AIDS, cancer, or those on immunosuppressive therapy. These patients are at increased risk for atypical pathogens, which can complicate diagnosis and treatment. The clinical presentation may be subtle, with symptoms like fever, fatigue, and heart murmurs, making it challenging to identify. Diagnostic challenges arise due to the need for blood cultures, echocardiograms, and sometimes advanced imaging techniques to confirm the diagnosis. The presence of coexisting conditions, such as diabetes or chronic kidney disease, can further obscure the clinical picture, necessitating a thorough evaluation and a multidisciplinary approach to management.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variety of causative organisms leading to different treatment protocols
  • Need for comprehensive diagnostic testing to confirm atypical pathogens
  • Potential overlap with other cardiac conditions, complicating coding
  • Variability in clinical presentation among immunocompromised patients

Audit Risk Factors

  • Inadequate documentation of the patient's immunocompromised status
  • Failure to specify the causative organism
  • Lack of supporting diagnostic tests in the medical record
  • Misclassification of endocarditis type

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed history of immunocompromised status, laboratory results, and treatment plans.

Common Clinical Scenarios

Patients presenting with fever and heart murmur, especially those with a history of IV drug use or recent surgeries.

Billing Considerations

Ensure all relevant cultures and imaging studies are documented to support the diagnosis.

Cardiology

Documentation Requirements

Echocardiogram results, clinical findings, and any surgical interventions performed.

Common Clinical Scenarios

Patients with prosthetic heart valves or previous endocarditis presenting with new cardiac symptoms.

Billing Considerations

Document any prior cardiac history and the patient's current medication regimen.

Coding Guidelines

Inclusion Criteria

Use A43.8 When
  • According to ICD
  • 10 coding guidelines, A43
  • 8 should be used when the specific type of endocarditis does not fit into other defined categories
  • Coders must ensure that the documentation supports the diagnosis and that any opportunistic infections are clearly noted

Exclusion Criteria

Do NOT use A43.8 When
No specific exclusions found.

Related CPT Codes

93306CPT Code

Echocardiography, transthoracic, real-time with interpretation

Clinical Scenario

Used to evaluate suspected endocarditis in patients presenting with symptoms.

Documentation Requirements

Echocardiogram results must be documented in the patient's medical record.

Specialty Considerations

Cardiology specialists should ensure that the echocardiogram findings correlate with clinical symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of endocarditis, including the ability to capture atypical forms and opportunistic infections, which were less clearly defined in ICD-9.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of endocarditis, including the ability to capture atypical forms and opportunistic infections, which were less clearly defined in ICD-9.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    CDC Endocarditis Information

Coding & Billing References

  • •
    CDC Endocarditis Information

Frequently Asked Questions

What are the common pathogens associated with A43.8?

Common pathogens include fungi such as Candida species and atypical bacteria, particularly in immunocompromised patients.

How can coders ensure accurate coding for A43.8?

Coders should ensure thorough documentation of the patient's clinical status, including any immunocompromised conditions and the results of diagnostic tests.