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ICD-10 Coding for Impaired Glucose Tolerance(R73.03, R73.09)

Complete ICD-10-CM coding and documentation guide for Impaired Glucose Tolerance. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

PrediabetesIGT

Related ICD-10 Code Ranges

Complete code families applicable to Impaired Glucose Tolerance

R73.0-R73.9Primary Range

Abnormal glucose levels

This range includes codes for various abnormal glucose levels, including prediabetes and other non-specific glucose abnormalities.

Diabetes mellitus

This range is relevant when impaired glucose tolerance progresses to diabetes mellitus.

Abnormal glucose complicating pregnancy

Used for gestational glucose intolerance without diabetes criteria.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
R73.03PrediabetesUse when diagnostic criteria for prediabetes are met.
  • Fasting Plasma Glucose (FPG) 100-125 mg/dL
  • 2-hour OGTT 140-199 mg/dL
R73.09Other abnormal glucoseUse for abnormal glucose levels not meeting prediabetes criteria.
  • Random glucose 110-140 mg/dL without meeting OGTT thresholds

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 impaired glucose tolerance

Essential facts and insights about Impaired Glucose Tolerance

The ICD-10 code for impaired glucose tolerance is R73.03, used when specific lab criteria are met.

Primary ICD-10-CM Codes for impaired glucose tolerance

Prediabetes
Billable Code

Decision Criteria

clinical Criteria

  • FPG between 100-125 mg/dL or 2-hour OGTT between 140-199 mg/dL

Applicable To

  • Impaired glucose tolerance

Excludes

Clinical Validation Requirements

  • Fasting Plasma Glucose (FPG) 100-125 mg/dL
  • 2-hour OGTT 140-199 mg/dL

Code-Specific Risks

  • Incorrect use without meeting diagnostic criteria

Coding Notes

  • Ensure lab results meet prediabetes criteria before coding.

Ancillary Codes

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

Obesity

E66.-
Use when obesity is a contributing factor to impaired glucose tolerance.

Differential Codes

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

Other abnormal glucose

R73.09
Use when glucose levels are abnormal but do not meet criteria for prediabetes.

Prediabetes

R73.03
Use when prediabetes criteria are met.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Impaired Glucose Tolerance to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code R73.03.

Impact

Clinical: Misdiagnosis of patient condition., Regulatory: Non-compliance with ICD-10 guidelines., Financial: Potential claim denials.

Mitigation Strategy

Verify lab results meet prediabetes criteria.

Impact

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

Mitigation Strategy

Ensure lab results meet prediabetes thresholds before coding.

Impact

Coding R73.03 without meeting criteria.

Mitigation Strategy

Implement checks for lab result documentation.

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 Impaired Glucose Tolerance, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Impaired Glucose Tolerance

Use these documentation templates to ensure complete and accurate documentation for Impaired Glucose Tolerance. These templates include all required elements for proper coding and billing.

Confirmed IGT

Specialty: Endocrinology

Required Elements

  • Patient demographics
  • Lab results
  • Diagnosis
  • Treatment plan

Example Documentation

45M with BMI 32 presents for follow-up of abnormal GTT. Fasting glucose 108 mg/dL, 2h OGTT 148 mg/dL. Diagnosed with impaired glucose tolerance (R73.03). Counseled on lifestyle modifications.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Elevated glucose levels.
Good Documentation Example
2h OGTT result: 155 mg/dL, consistent with impaired glucose tolerance (R73.03).
Explanation
The good example provides specific lab results and a clear diagnosis.

Need help with ICD-10 coding for Impaired Glucose Tolerance? Ask your questions below.

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