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ICD-10 Guide
ICD-10 CodesD46.21

D46.21

Billable

Refractory anemia with excess of blasts 1

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

Code Description

ICD-10 D46.21 is a billable code used to indicate a diagnosis of refractory anemia with excess of blasts 1.

Key Diagnostic Point:

Refractory anemia with excess of blasts 1 (RAEB-1) is a subtype of myelodysplastic syndromes (MDS) characterized by ineffective hematopoiesis leading to anemia, and an increased number of myeloblasts in the bone marrow. Patients typically present with symptoms of anemia such as fatigue, pallor, and weakness. The diagnosis is confirmed through bone marrow biopsy, which reveals 5-9% myeloblasts. This condition is classified under neoplasms of uncertain behavior, indicating that while it is not overtly malignant, it has the potential to progress to acute myeloid leukemia (AML). Surveillance is critical as patients with RAEB-1 are at a higher risk for transformation into more aggressive forms of leukemia. Treatment options may include supportive care, growth factors, and in some cases, hematopoietic stem cell transplantation. The prognosis varies based on individual patient factors, including age, overall health, and response to treatment. Regular monitoring of blood counts and clinical symptoms is essential for managing this condition effectively.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of myelodysplastic syndromes and their classifications.
  • Differentiation from other types of anemia and leukemias.
  • Need for precise documentation of blast percentages.
  • Potential for progression to acute leukemia necessitates careful monitoring.

Audit Risk Factors

  • Inadequate documentation of blast percentage.
  • Failure to document the patient's clinical symptoms.
  • Misclassification of the condition as a more benign form of anemia.
  • Lack of follow-up documentation indicating monitoring for progression.

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 anemia, requiring evaluation of bone marrow.

Billing Considerations

Ensure accurate reporting of blast percentages and any transformation to acute leukemia.

Oncology

Documentation Requirements

Detailed treatment plans, response to therapy, and monitoring for progression.

Common Clinical Scenarios

Patients undergoing chemotherapy or stem cell transplantation.

Billing Considerations

Document any complications or side effects related to treatment.

Coding Guidelines

Inclusion Criteria

Use D46.21 When
  • According to ICD
  • 10 guidelines, D46
  • 21 should be used when the patient has a confirmed diagnosis of refractory anemia with excess of blasts 1, with documentation supporting the diagnosis and treatment plan

Exclusion Criteria

Do NOT use D46.21 When
  • Exclusion criteria include other forms of anemia or leukemias that do not meet the specific 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-1.

Documentation Requirements

Document the reason for the CBC and results.

Specialty Considerations

Hematology specialists should ensure all relevant parameters 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 conditions like RAEB-1, improving the accuracy of patient records and facilitating better tracking of treatment outcomes and disease progression.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like RAEB-1, improving the accuracy of patient records and facilitating better tracking of treatment outcomes and disease progression.

Reimbursement & Billing Impact

reimbursement and compliance.

Resources

Clinical References

  • •
    American Society of Hematology

Coding & Billing References

  • •
    American Society of Hematology

Frequently Asked Questions

What is the significance of the percentage of blasts in RAEB-1?

The percentage of blasts is crucial for diagnosis and monitoring, as it indicates the severity of the disease and the risk of progression to acute leukemia.