2026 ICD-10-CM Diagnosis Code E10.3391Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema, right eye
ICD-10-CM Codes›E00–E89›E08-E13›E10
- Billable — Valid for Submission
- 7th Character 1 — Right Eye
- Chronic Condition
E10.3391 is a billable ICD-10-CM diagnosis code for type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema, right eye. The 7th character 1 reports diabetic eye disease affecting the right eye. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 124 through 125. Coders also document this condition as moderate nonproliferative diabetic retinopathy of right eye. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Diabetes mellitus with complication; Diabetes mellitus, Type 1; and Retinal and vitreous conditions.
Code Identity
Code Classification
Quality Payment Program MeasuresBilling
Medicare quality measures that can apply when E10.3391 is part of the patient record.
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
High Priority: YES
Measure Type: Intermediateoutcome
Submission Methods: Claims, Electronic Health Record, Cms Web Interface, Registry
Description: Percentage of patients 18-75 years of age with diabetes who had hemoglobin A1c > 9.0% during the measurement period.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Moderate nonproliferative diabetic retinopathy of right eye
- Moderate nonproliferative retinopathy due to type 1 diabetes mellitus
- Moderate nonproliferative retinopathy of right eye due to diabetes mellitus type 1
- Nonproliferative retinopathy of right eye due to diabetes mellitus type 1
Coding GuidelinesGuidance
The diabetes mellitus codes are combination codes that include the type of diabetes mellitus, the body system affected, and the complications affecting that body system. As many codes within a particular category as are necessary to describe all of the complications of the disease may be used. They should be sequenced based on the reason for a particular encounter. Assign as many codes from categories E08 - E13 as needed to identify all of the associated conditions that the patient has.
The age of a patient is not the sole determining factor, though most type 1 diabetics develop the condition before reaching puberty. For this reason type 1 diabetes mellitus is also referred to as juvenile diabetes.
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Diabetes Type 1
Diabetes means your blood glucose, or blood sugar, levels are too high. With type 1 diabetes, your pancreas does not make insulin. Insulin is a hormone that helps glucose get into your cells to give them energy. Without insulin, too much glucose stays in your blood.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert E10.3391 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code History & ChangesHistory
Replacement E10.3391 replaces the following previously assigned code(s):
- E10.339 - Type 1 diab w moderate nonprlf diab rtnop w/o macular edema
Questions About E10.3391Overview
Is E10.3391 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema, right eye on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character 1 in E10.3391 mean?
The final character 1 reports diabetic eye disease affecting the right eye, in this case involving the type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema.
What MS-DRG does E10.3391 group to?
When type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema, right eye is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, with relative weights from 0.7678 to 1.3231 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of E10.3391?
Under the General Equivalence Mappings, type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema, right eye converts to ICD-9-CM 250.51 (DMI ophth nt st uncntrld) and 362.05 (mod nonprolf db retinoph). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
