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ICD-10 Guide
ICD-10 CodesE10.329

E10.329

Billable

Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema

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

Code Description

ICD-10 E10.329 is a billable code used to indicate a diagnosis of type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema.

Key Diagnostic Point:

E10.329 refers to a specific condition in which a patient has Type 1 diabetes mellitus accompanied by mild nonproliferative diabetic retinopathy (NPDR) without macular edema. Type 1 diabetes is characterized by the autoimmune destruction of insulin-producing beta cells in the pancreas, leading to absolute insulin deficiency. Diabetic retinopathy is a common complication of diabetes, resulting from damage to the retinal blood vessels due to prolonged hyperglycemia. Mild NPDR is the earliest stage of diabetic retinopathy, where small microaneurysms and retinal hemorrhages may be present, but there is no significant vision impairment or macular edema. Management of this condition typically involves strict glycemic control, with HbA1c levels ideally maintained below 7% to prevent further progression of retinopathy. Insulin therapy is often required for Type 1 diabetes management, and regular ophthalmologic examinations are crucial for monitoring retinal health. This code is essential for accurately documenting the presence of both diabetes and its ocular complications, which can guide treatment and management strategies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between types of diabetic retinopathy
  • Understanding the nuances of diabetic complications
  • Accurate documentation of HbA1c levels
  • Insulin management protocols

Audit Risk Factors

  • Inadequate documentation of retinopathy severity
  • Failure to document HbA1c levels
  • Lack of follow-up notes on eye examinations
  • Misclassification of diabetic retinopathy stages

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Detailed records of diabetes management, including insulin regimens and HbA1c levels.

Common Clinical Scenarios

Patients presenting with uncontrolled diabetes or complications related to diabetes.

Billing Considerations

Ensure comprehensive documentation of diabetes management and any referrals to ophthalmology.

Ophthalmology

Documentation Requirements

Thorough retinal examination reports, including findings related to diabetic retinopathy.

Common Clinical Scenarios

Routine eye exams for diabetic patients and management of diabetic retinopathy.

Billing Considerations

Document the absence of macular edema clearly to support the use of E10.329.

Coding Guidelines

Inclusion Criteria

Use E10.329 When
  • According to ICD
  • 10 coding guidelines, E10
  • 329 should be used when a patient has Type 1 diabetes with mild NPDR and no macular edema
  • It is essential to document the absence of macular edema to justify the use of this specific code

Exclusion Criteria

Do NOT use E10.329 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

92014CPT Code

Ophthalmological examination, established patient

Clinical Scenario

Used during routine eye exams for diabetic patients.

Documentation Requirements

Document findings of the eye exam, including retinopathy status.

Specialty Considerations

Ophthalmologists should ensure clear documentation of retinopathy stages.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of diabetic complications, improving the accuracy of patient records and facilitating better management of diabetes-related conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of diabetic complications, improving the accuracy of patient records and facilitating better management of diabetes-related conditions.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of diabetic complications, improving the accuracy of patient records and facilitating better management of diabetes-related conditions.

Resources

Clinical References

  • •
    American Diabetes Association

Coding & Billing References

  • •
    American Diabetes Association

Frequently Asked Questions

What is the significance of coding E10.329?

Coding E10.329 accurately reflects the patient's condition of Type 1 diabetes with mild NPDR, which is crucial for appropriate management and treatment planning.