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ICD-10 Guide
ICD-10 CodesD46.2

D46.2

Billable

Refractory anemia with excess of blasts [RAEB]

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

Code Description

ICD-10 D46.2 is a billable code used to indicate a diagnosis of refractory anemia with excess of blasts [raeb].

Key Diagnostic Point:

Refractory anemia with excess of blasts (RAEB) is a subtype of myelodysplastic syndromes (MDS) characterized by ineffective hematopoiesis and the presence of increased numbers of myeloid blasts in the bone marrow and peripheral blood. Patients with RAEB typically present with symptoms of anemia, such as fatigue, pallor, and weakness, alongside signs of cytopenias, which may include thrombocytopenia and leukopenia. The diagnosis is confirmed through bone marrow biopsy, which reveals dysplastic changes and an increased blast percentage, typically ranging from 5% to 19%. RAEB is considered a precursor to acute myeloid leukemia (AML), and its management often involves supportive care, such as transfusions and growth factors, as well as potential disease-modifying therapies like hypomethylating agents. Due to its potential for progression to AML, patients require careful monitoring and follow-up, making surveillance critical in the management of this condition.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiation from other myelodysplastic syndromes
  • Need for precise blast percentage documentation
  • Potential for progression to acute myeloid leukemia
  • Variability in clinical presentation

Audit Risk Factors

  • Inadequate documentation of blast counts
  • Failure to note progression to AML
  • Misclassification of MDS subtypes
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Hematology

Documentation Requirements

Comprehensive documentation of blood counts, bone marrow biopsy results, and treatment plans.

Common Clinical Scenarios

Patients presenting with fatigue and cytopenias requiring evaluation for MDS.

Billing Considerations

Ensure accurate recording of blast percentages and any treatment responses.

Oncology

Documentation Requirements

Detailed treatment history, including chemotherapy regimens and response assessments.

Common Clinical Scenarios

Patients transitioning from MDS to AML requiring aggressive treatment.

Billing Considerations

Monitor for signs of progression and document any changes in treatment strategy.

Coding Guidelines

Inclusion Criteria

Use D46.2 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the diagnosis, including the percentage of blasts and any associated conditions

Exclusion Criteria

Do NOT use D46.2 When
  • Exclude conditions that do not meet the criteria for RAEB

Related ICD-10 Codes

Related CPT Codes

85027CPT Code

Complete blood count (CBC) with differential

Clinical Scenario

Used to monitor blood counts in patients with RAEB.

Documentation Requirements

Document all blood count results and any significant changes.

Specialty Considerations

Hematologists should ensure that CBC results are correlated with clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like RAEB, improving the accuracy of data collection and reimbursement processes. It emphasizes the need for detailed documentation of clinical findings.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like RAEB, improving the accuracy of data collection and reimbursement processes. It emphasizes the need for detailed documentation of clinical findings.

Reimbursement & Billing Impact

reimbursement processes. It emphasizes the need for detailed documentation of clinical findings.

Resources

Clinical References

  • •
    American Society of Hematology

Coding & Billing References

  • •
    American Society of Hematology

Frequently Asked Questions

What is the significance of the blast percentage in RAEB?

The blast percentage is crucial in determining the severity of RAEB and the risk of progression to acute myeloid leukemia. Accurate documentation of this percentage is essential for appropriate coding and treatment planning.