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ICD-10 Guide
ICD-10 CodesR71

R71

Abnormality of red blood cells

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 R71 is a billable code used to indicate a diagnosis of abnormality of red blood cells.

Key Diagnostic Point:

R71 refers to abnormalities in red blood cells that are not classified elsewhere. These abnormalities can manifest as variations in size, shape, or number of red blood cells, which may indicate underlying hematological disorders. Common findings include anisocytosis (variation in cell size), poikilocytosis (abnormal shapes), and reticulocytosis (increased immature red blood cells). These abnormalities can be indicative of conditions such as anemia, thalassemia, or bone marrow disorders. Laboratory tests, including complete blood counts (CBC) and peripheral blood smears, are essential for diagnosis. Clinicians must consider the patient's clinical history, symptoms, and additional lab findings to determine the underlying cause of the abnormality. Accurate coding requires thorough documentation of the clinical context and any associated symptoms or findings.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying conditions that can cause red blood cell abnormalities
  • Need for comprehensive lab results interpretation
  • Potential overlap with other hematological codes
  • Documentation requirements for specificity

Audit Risk Factors

  • Insufficient documentation of lab findings
  • Failure to specify the type of red blood cell abnormality
  • Inaccurate linkage between symptoms and the diagnosis
  • Misclassification of the abnormality as a more specific condition

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed patient history, lab results, and clinical findings must be documented.

Common Clinical Scenarios

Patients presenting with fatigue, pallor, or unexplained bruising.

Billing Considerations

Consideration of chronic diseases that may contribute to red blood cell abnormalities.

Emergency Medicine

Documentation Requirements

Acute care notes must include vital signs, lab results, and immediate clinical findings.

Common Clinical Scenarios

Patients with acute anemia or hemolytic crises presenting with shortness of breath or tachycardia.

Billing Considerations

Rapid assessment and documentation of lab results are critical for timely intervention.

Coding Guidelines

Inclusion Criteria

Use R71 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is used only when the abnormality is not classified elsewhere
  • Document the clinical context and any associated symptoms

Exclusion Criteria

Do NOT use R71 When
No specific exclusions found.

Related Codes

Child Codes

2 codes
R71.0
Precipitous drop in hematocrit
R71.8
Other abnormality of red blood cells

Related CPT Codes

85025CPT Code

Complete blood count (CBC) with differential

Clinical Scenario

Used to evaluate red blood cell abnormalities.

Documentation Requirements

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

Specialty Considerations

Internal medicine and hematology may require more detailed documentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of red blood cell abnormalities, improving the granularity of data for epidemiological studies and clinical research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of red blood cell abnormalities, improving the granularity of data for epidemiological studies and clinical research.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of red blood cell abnormalities, improving the granularity of data for epidemiological studies and clinical research.

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

What types of conditions can R71 represent?

R71 can represent various abnormalities in red blood cells, including changes in size, shape, and number, which may indicate underlying conditions such as anemia, thalassemia, or bone marrow disorders.