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 3: Diseases of the blood and blood-forming organsD77

D77

Billable

Other disorders of blood and blood-forming organs in diseases classified elsewhere

Chapter 3:Diseases of the blood and blood-forming organs

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

Code Description

ICD-10 D77 is a billable code used to indicate a diagnosis of other disorders of blood and blood-forming organs in diseases classified elsewhere.

Key Diagnostic Point:

ICD-10 code D77 encompasses a variety of disorders related to blood and blood-forming organs that are classified under other diseases. This includes conditions such as neutropenia, which is characterized by an abnormally low level of neutrophils, a type of white blood cell essential for fighting infections. Neutropenia can arise from various underlying causes, including autoimmune disorders, bone marrow disorders, or as a side effect of certain medications. Other white blood cell disorders may include leukopenia and lymphopenia, which also reflect deficiencies in specific types of white blood cells. Disorders of the spleen, such as splenomegaly or hypersplenism, can lead to abnormal blood cell counts and are often associated with systemic diseases. Immunodeficiencies, whether primary (genetic) or secondary (acquired), can also lead to various blood disorders, including those classified under D77. Accurate coding requires a thorough understanding of the underlying conditions and their implications on blood health.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying conditions leading to blood disorders
  • Need for precise documentation of the primary disease causing the blood disorder
  • Differentiation between primary and secondary disorders
  • Potential for overlapping symptoms with other blood disorders

Audit Risk Factors

  • Inadequate documentation of the underlying disease
  • Misclassification of primary versus secondary disorders
  • Failure to capture all relevant blood disorder manifestations
  • Inconsistent use of laboratory results in documentation

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 the primary disease is clearly linked to the blood disorder for accurate coding.

Immunology

Documentation Requirements

Thorough documentation of immunodeficiency types and associated blood disorders.

Common Clinical Scenarios

Patients with recurrent infections or abnormal blood cell counts due to immunodeficiency.

Billing Considerations

Document the specific immunodeficiency and its impact on blood health.

Coding Guidelines

Inclusion Criteria

Use D77 When
  • According to ICD
  • 10 coding guidelines, D77 should be used when the blood disorder is a direct consequence of another disease
  • Coders must ensure that the primary disease is documented and that D77 is not used as a primary diagnosis unless specified

Exclusion Criteria

Do NOT use D77 When
No specific exclusions found.

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 should ensure that the CBC results are linked to the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of blood disorders, enabling better tracking of conditions like neutropenia and other related disorders. This specificity aids in research and treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of blood disorders, enabling better tracking of conditions like neutropenia and other related disorders. This specificity aids in research and treatment planning.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of blood disorders, enabling better tracking of conditions like neutropenia and other related disorders. This specificity aids in research and treatment planning.

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 code D77?

Use code D77 when documenting blood disorders that are a consequence of other diseases, ensuring that the primary condition is clearly identified.