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ICD-10 Guide
ICD-10 CodesD75.9

D75.9

Billable

Disease of blood and blood-forming organs, unspecified

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

Code Description

ICD-10 D75.9 is a billable code used to indicate a diagnosis of disease of blood and blood-forming organs, unspecified.

Key Diagnostic Point:

D75.9 refers to diseases affecting the blood and blood-forming organs that are not specified in detail. This code encompasses a variety of conditions, including neutropenia, which is characterized by an abnormally low level of neutrophils, a type of white blood cell essential for fighting infections. White blood cell disorders can manifest as leukopenia or leukocytosis, affecting the body's immune response. Disorders of the spleen, such as splenomegaly or hypersplenism, can also lead to blood disorders by affecting blood cell production and destruction. Immunodeficiencies, whether primary or secondary, can result in increased susceptibility to infections and may be associated with various hematological abnormalities. The unspecified nature of D75.9 means that further clinical details are necessary to determine the exact underlying pathology, which can complicate diagnosis and treatment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Lack of specificity in the diagnosis
  • Variety of underlying conditions that can lead to similar symptoms
  • Need for comprehensive patient history and lab results
  • Potential for overlapping symptoms with other hematological disorders

Audit Risk Factors

  • Insufficient documentation to support the unspecified diagnosis
  • Inconsistent coding practices among different providers
  • Failure to document the underlying cause of blood disorders
  • Lack of follow-up documentation to clarify the diagnosis

Specialty Focus

Medical Specialties

Hematology

Documentation Requirements

Detailed lab results, patient history, and treatment plans must be documented.

Common Clinical Scenarios

Patients presenting with unexplained anemia, leukopenia, or thrombocytopenia.

Billing Considerations

Ensure that all relevant lab tests are included in the documentation to support the diagnosis.

Immunology

Documentation Requirements

Documentation of immunodeficiency testing and patient history of infections.

Common Clinical Scenarios

Patients with recurrent infections or unexplained blood disorders.

Billing Considerations

Document any prior immunological assessments to clarify the diagnosis.

Coding Guidelines

Inclusion Criteria

Use D75.9 When
  • According to ICD
  • 10 guidelines, D75
  • 9 should be used when the specific disease of the blood or blood
  • forming organs is not documented
  • Coders should ensure that all relevant clinical information is captured to support the use of this code

Exclusion Criteria

Do NOT use D75.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

85025CPT Code

Complete blood count (CBC) with differential

Clinical Scenario

Used to evaluate blood disorders, including neutropenia.

Documentation Requirements

Document the reason for the CBC and any relevant clinical findings.

Specialty Considerations

Hematologists may require additional tests based on CBC results.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more detailed coding of blood disorders, but D75.9 remains a catch-all for unspecified conditions, which can lead to challenges in accurately capturing patient complexity.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more detailed coding of blood disorders, but D75.9 remains a catch-all for unspecified conditions, which can lead to challenges in accurately capturing patient complexity.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

When should I use D75.9?

D75.9 should be used when a patient presents with a disease of the blood or blood-forming organs that is not specified. Ensure that all relevant clinical information is documented to support this code.