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ICD-10 Coding for Abnormal Complete Blood Count(D64.9, D70.9)

Complete ICD-10-CM coding and documentation guide for Abnormal Complete Blood Count. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Abnormal CBCAbnormal Blood Test Results

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Related ICD-10 Code Ranges

Complete code families applicable to Abnormal Complete Blood Count

R70-R79

Abnormal findings on examination of blood, without diagnosis

Used for abnormal blood test results when a specific diagnosis is not confirmed.

D50-D89Primary Range

Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

Includes specific conditions like anemia, neutropenia, and other hematologic disorders.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
D64.9Anemia, unspecifiedUse when anemia is confirmed but the specific type is not determined.
  • Hb <13 g/dL for males, <12 g/dL for females
  • MCV <80 fL
  • RDW >14.5%
D70.9Neutropenia, unspecifiedUse when neutropenia is confirmed but the cause is not identified.
  • WBC <4.0k/μL on multiple tests
  • Normal differential count

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for abnormal CBC

Essential facts and insights about Abnormal Complete Blood Count

The ICD-10 code for an abnormal CBC without a specific diagnosis is R79.89. Use D64.9 for unspecified anemia.

Primary ICD-10-CM Codes for abnormal complete blood count

D64.9
Anemia, unspecified
Billable Code

Decision Criteria

clinical Criteria

  • Presence of low hemoglobin and hematocrit levels.

Applicable To

  • Anemia NOS

Excludes

Clinical Validation Requirements

  • Hb <13 g/dL for males, <12 g/dL for females
  • MCV <80 fL
  • RDW >14.5%

Code-Specific Risks

  • May lead to reimbursement issues if not further specified.

Coding Notes

  • Ensure to document specific lab values and any related symptoms.
View Full Code Details

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Other specified abnormal findings of blood chemistry

R79.89
Use when specific abnormal findings are noted but not yet diagnosed.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Iron deficiency anemia, unspecified

D50.9
Confirmed by low ferritin and high TIBC.

Agranulocytosis

D70.0
Severe neutropenia with increased risk of infection.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Abnormal Complete Blood Count to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code D64.9.

Impact

Clinical: May lead to misdiagnosis., Regulatory: Non-compliance with documentation standards., Financial: Potential for claim denials.

Mitigation Strategy

Ensure all lab values are documented., Provide clinical context for abnormal findings.

Impact

Reimbursement: May lead to claim denials or reduced payments., Compliance: Non-compliance with coding guidelines., Data Quality: Decreases accuracy of patient records.

Mitigation Strategy

Ensure to use specific diagnosis codes when confirmed.

Impact

High risk of audit if unspecified codes are used without justification.

Mitigation Strategy

Use specific codes whenever possible and document thoroughly.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Abnormal Complete Blood Count, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Abnormal Complete Blood Count

Use these documentation templates to ensure complete and accurate documentation for Abnormal Complete Blood Count. These templates include all required elements for proper coding and billing.

Hematology Consult

Specialty: Hematology

Required Elements

  • CBC results
  • Peripheral smear findings
  • Clinical impression

Example Documentation

CBC shows WBC 22.3k/μL with 85% neutrophils. Hb 8.7 g/dL, MCV 72 fL. Peripheral smear indicates iron deficiency anemia.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Abnormal CBC results noted.
Good Documentation Example
WBC 22.3k/μL with 85% neutrophils. Hb 8.7 g/dL, MCV 72 fL. Peripheral smear shows hypochromic microcytic RBCs.
Explanation
The good example provides specific lab values and a clinical impression.

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