2026 ICD-10-CM Diagnosis Code E10Type 1 diabetes mellitus
E10 is a non-billable ICD-10-CM category code for type 1 diabetes mellitus, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E10.10, E10.11, E10.21, and E10.22.
Code Identity
Code Classification
Specific Coding for Type 1 diabetes mellitusOverview
Non-specific codes like E10 require more characters. Use one of these billable codes instead:
E10.1 for Type 1 diabetes mellitus with ketoacidosis
Use E10.10 for Type 1 diabetes mellitus with ketoacidosis without coma
Use E10.11 for Type 1 diabetes mellitus with ketoacidosis with coma
E10.2 for Type 1 diabetes mellitus with kidney complications
Use E10.21 for Type 1 diabetes mellitus with diabetic nephropathy
Use E10.22 for Type 1 diabetes mellitus with diabetic chronic kidney disease
Use E10.29 for Type 1 diabetes mellitus with other diabetic kidney complication
E10.3 for Type 1 diabetes mellitus with ophthalmic complications
E10.31 for Type 1 diabetes mellitus with unspecified diabetic retinopathy
E10.32 for Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy
E10.33 for Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy
E10.34 for Type 1 diabetes mellitus with severe nonproliferative diabetic retinopathy
E10.35 for Type 1 diabetes mellitus with proliferative diabetic retinopathy
Use E10.36 for Type 1 diabetes mellitus with diabetic cataract
E10.37 for Type 1 diabetes mellitus with diabetic macular edema, resolved following treatment
Use E10.39 for Type 1 diabetes mellitus with other diabetic ophthalmic complication
E10.4 for Type 1 diabetes mellitus with neurological complications
Use E10.40 for Type 1 diabetes mellitus with diabetic neuropathy, unspecified
Use E10.41 for Type 1 diabetes mellitus with diabetic mononeuropathy
Use E10.42 for Type 1 diabetes mellitus with diabetic polyneuropathy
Use E10.43 for Type 1 diabetes mellitus with diabetic autonomic (poly)neuropathy
Use E10.44 for Type 1 diabetes mellitus with diabetic amyotrophy
Use E10.49 for Type 1 diabetes mellitus with other diabetic neurological complication
E10.5 for Type 1 diabetes mellitus with circulatory complications
Use E10.51 for Type 1 diabetes mellitus with diabetic peripheral angiopathy without gangrene
Use E10.52 for Type 1 diabetes mellitus with diabetic peripheral angiopathy with gangrene
Use E10.59 for Type 1 diabetes mellitus with other circulatory complications
E10.6 for Type 1 diabetes mellitus with other specified complications
E10.61 for Type 1 diabetes mellitus with diabetic arthropathy
E10.62 for Type 1 diabetes mellitus with skin complications
E10.63 for Type 1 diabetes mellitus with oral complications
E10.64 for Type 1 diabetes mellitus with hypoglycemia
Use E10.65 for Type 1 diabetes mellitus with hyperglycemia
Use E10.69 for Type 1 diabetes mellitus with other specified complication
Use E10.8 for Type 1 diabetes mellitus with unspecified complications
Use E10.9 for Type 1 diabetes mellitus without complications
E10.A for Type 1 diabetes mellitus, presymptomatic
Use E10.A0 for Type 1 diabetes mellitus, presymptomatic, unspecified
Use E10.A1 for Type 1 diabetes mellitus, presymptomatic, Stage 1
Use E10.A2 for Type 1 diabetes mellitus, presymptomatic, Stage 2
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.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Includes
- brittle diabetes (mellitus)
- diabetes (mellitus) due to autoimmune process
- diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction
- idiopathic diabetes (mellitus)
- juvenile onset diabetes (mellitus)
- ketosis-prone diabetes (mellitus)
Type 1 Excludes
- diabetes mellitus due to underlying condition E08
- drug or chemical induced diabetes mellitus E09
- gestational diabetes O24.4
- hyperglycemia NOS R73.9
- neonatal diabetes mellitus P70.2
- postpancreatectomy diabetes mellitus E13
- postprocedural diabetes mellitus E13
- secondary diabetes mellitus NEC E13
- type 2 diabetes mellitus E11
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
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.
