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ICD-10 Coding for Lab Results Review(R79.9, R73.01)

Complete ICD-10-CM coding and documentation guide for Lab Results Review. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Laboratory Results AnalysisClinical Lab Evaluation

Related ICD-10 Code Ranges

Complete code families applicable to Lab Results Review

R70-R79Primary Range

Abnormal findings on examination of blood, without diagnosis

This range includes codes for abnormal blood chemistry results that require further investigation or correlation with clinical findings.

Diabetes mellitus

Relevant when abnormal lab results are attributed to diabetes, requiring specific diabetes codes.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
R79.9Abnormal findings on examination of blood, unspecifiedUse when lab results are abnormal but no specific diagnosis is confirmed.
  • Documented abnormal lab values without a clear diagnosis
  • Physician's note indicating the need for further investigation
R73.01Impaired fasting glucoseUse when fasting glucose levels are elevated and diabetes is confirmed.
  • Fasting glucose >126 mg/dL
  • HbA1c ≥6.5%

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 lab results review

Essential facts and insights about Lab Results Review

The ICD-10 code for unspecified abnormal lab results is R79.9, used when lab findings are abnormal but no specific diagnosis is confirmed.

Primary ICD-10-CM Codes for lab results review

Abnormal findings on examination of blood, unspecified
Billable Code

Decision Criteria

clinical Criteria

  • Abnormal lab results without a specific diagnosis

Applicable To

  • Abnormal blood chemistry NOS

Excludes

  • Specific abnormal findings classified elsewhere

Clinical Validation Requirements

  • Documented abnormal lab values without a clear diagnosis
  • Physician's note indicating the need for further investigation

Code-Specific Risks

  • Risk of overuse when specific conditions are not ruled out

Coding Notes

  • Ensure documentation supports the use of R79.9 by indicating the need for further investigation.

Ancillary Codes

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

Encounter for general adult medical examination without abnormal findings

Z00.00
Use when lab results are part of a routine examination without specific findings.

Differential Codes

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

Impaired fasting glucose

R73.01
Use R73.01 when fasting glucose is >126 mg/dL and HbA1c ≥6.5% with diabetes management.

Type 2 diabetes mellitus without complications

E11.9
Use E11.9 when diabetes is confirmed and managed.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Lab Results Review to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code R79.9.

Impact

Clinical: Leads to unclear clinical picture., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials.

Mitigation Strategy

Require exact values (e.g., 'Hgb 10.2 g/dL with MCV 72 fL'), Ensure clinical interpretation is documented

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate patient records.

Mitigation Strategy

Use R73.09 for transient hyperglycemia without a diabetes diagnosis.

Impact

Frequent use of unspecified codes like R79.9 without adequate documentation.

Mitigation Strategy

Ensure all abnormal findings are documented with specific lab values and clinical interpretation.

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 Lab Results Review, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Lab Results Review

Use these documentation templates to ensure complete and accurate documentation for Lab Results Review. These templates include all required elements for proper coding and billing.

Review of abnormal lab results

Specialty: Internal Medicine

Required Elements

  • Test name and date
  • Numeric result with reference range
  • Clinical interpretation
  • Action plan

Example Documentation

Lab Review: Fasting glucose 142 mg/dL (Ref 70-99), HbA1c 7.1%, consistent with uncontrolled type 2 DM. Increased metformin to 1000mg BID.

Examples: Poor vs. Good Documentation

Poor Documentation Example
High glucose, follow up needed
Good Documentation Example
Fasting glucose 142 mg/dL (Ref 70-99) with HbA1c 7.1%, consistent with uncontrolled type 2 DM. Increased metformin to 1000mg BID and ordered repeat HbA1c in 3 months.
Explanation
The good example provides specific lab values, clinical interpretation, and a clear action plan.

Need help with ICD-10 coding for Lab Results Review? Ask your questions below.

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