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ICD-10 Guide
ICD-10 CodesI51.89

I51.89

Billable

Other ill-defined heart diseases

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 I51.89 is a billable code used to indicate a diagnosis of other ill-defined heart diseases.

Key Diagnostic Point:

Other ill-defined heart diseases include various cardiac conditions that do not have a specific classification. These may present with nonspecific symptoms such as fatigue, palpitations, or shortness of breath. Diagnosis often requires a comprehensive evaluation, including imaging and laboratory tests. Treatment is individualized based on the patient's symptoms and underlying conditions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • patient's overall health
  • symptom severity

Audit Risk Factors

    Specialty Focus

    Related ICD-10 Codes

    Related CPT Codes

    93306CPT Code

    Clinical Scenario

    Documentation Requirements

    ICD-10 Impact

    Diagnostic & Documentation Impact

    Enhanced Specificity

    ICD-10 Improvements

    Can lead to significant morbidity if not properly managed.

    ICD-9 vs ICD-10

    Can lead to significant morbidity if not properly managed.

    Reimbursement & Billing Impact

    Can lead to significant morbidity if not properly managed.

    Resources

    Clinical References

    • •
      American Heart Association Resources

    Coding & Billing References

    • •
      American Heart Association Resources

    Frequently Asked Questions

    How are ill-defined heart diseases treated?

    Treatment is tailored to the individual and may include medications and lifestyle changes.