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ICD-10 Guide
ICD-10 CodesD72.110

D72.110

Billable

Idiopathic hypereosinophilic syndrome [IHES]

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

Code Description

ICD-10 D72.110 is a billable code used to indicate a diagnosis of idiopathic hypereosinophilic syndrome [ihes].

Key Diagnostic Point:

Idiopathic hypereosinophilic syndrome (IHES) is a rare hematological disorder characterized by persistently elevated eosinophil counts in the absence of identifiable causes. Eosinophils are a type of white blood cell involved in the body's immune response, particularly in allergic reactions and parasitic infections. In IHES, the eosinophilia can lead to significant tissue damage and organ dysfunction due to the infiltration of eosinophils into various tissues. Commonly affected organs include the skin, lungs, heart, and gastrointestinal tract. Patients may present with symptoms such as fever, weight loss, fatigue, and organ-specific symptoms depending on the sites of eosinophilic infiltration. The diagnosis is primarily clinical, supported by laboratory findings of eosinophilia and exclusion of secondary causes such as infections, malignancies, and autoimmune diseases. Management often involves corticosteroids and other immunosuppressive therapies to control eosinophil levels and mitigate organ damage. Due to the complexity of the condition and its potential overlap with other white blood cell disorders, accurate coding is essential for appropriate treatment and reimbursement.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differential diagnosis with other eosinophilic disorders
  • Need for comprehensive patient history and lab results
  • Potential for overlapping symptoms with other conditions
  • Variability in clinical presentation

Audit Risk Factors

  • Inadequate documentation of eosinophil counts
  • Failure to document exclusion of secondary causes
  • Lack of detailed clinical history
  • Misclassification with other eosinophilic disorders

Specialty Focus

Medical Specialties

Hematology

Documentation Requirements

Complete blood count (CBC) with differential, detailed patient history, and clinical findings.

Common Clinical Scenarios

Patients presenting with unexplained eosinophilia and associated symptoms.

Billing Considerations

Ensure all laboratory results are documented and correlate with clinical findings.

Immunology

Documentation Requirements

Immunological workup to rule out allergic or autoimmune conditions.

Common Clinical Scenarios

Patients with recurrent infections or allergic symptoms alongside eosinophilia.

Billing Considerations

Document any immunodeficiencies that may coexist with IHES.

Coding Guidelines

Inclusion Criteria

Use D72.110 When
  • Follow official ICD
  • Include relevant clinical findings and treatment plans

Exclusion Criteria

Do NOT use D72.110 When
  • 10 coding guidelines, ensuring accurate documentation of eosinophil counts and exclusion of secondary causes

Related ICD-10 Codes

Related CPT Codes

85025CPT Code

Complete blood count (CBC) with differential

Clinical Scenario

Used to confirm eosinophilia in suspected IHES cases.

Documentation Requirements

Document the eosinophil count and any relevant clinical findings.

Specialty Considerations

Hematology specialists should ensure comprehensive lab results are included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of IHES, improving the ability to capture the complexity of the condition and its management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of IHES, improving the ability to capture the complexity of the condition and its management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of IHES, improving the ability to capture the complexity of the condition and its management.

Resources

Clinical References

  • •
    American Society of Hematology

Coding & Billing References

  • •
    American Society of Hematology

Frequently Asked Questions

What are the common symptoms of IHES?

Common symptoms include fatigue, fever, weight loss, and organ-specific symptoms such as respiratory issues, skin rashes, and gastrointestinal disturbances.

How is IHES diagnosed?

Diagnosis is based on clinical evaluation, laboratory findings showing eosinophilia, and exclusion of secondary causes through comprehensive testing.