E10
Non-Billable

Type 1 diabetes mellitus

Non-Billable / Non-Specific Code

What is Type 1 diabetes mellitus?

ICD-10-CM E10 is the diagnosis code for Type 1 diabetes mellitus. This code falls under the section "Diabetes mellitus" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

⛔ Excludes1

Coding Guidelines for E10

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as E10. They are mutually exclusive:

  • 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.-)

ICD-10-CM Code Hierarchy

Understanding where E10 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 9 entries
E10.1Type 1 diabetes mellitus with ketoacidosisNon-BillableE10.10Type 1 diabetes mellitus with ketoacidosis without comaBillableE10.11Type 1 diabetes mellitus with ketoacidosis with comaBillableE10.2Type 1 diabetes mellitus with kidney complicationsNon-BillableE10.21Type 1 diabetes mellitus with diabetic nephropathyBillableE10.22Type 1 diabetes mellitus with diabetic chronic kidney diseaseBillableE10.29Type 1 diabetes mellitus with other diabetic kidney complicationBillableE10.3Type 1 diabetes mellitus with ophthalmic complicationsNon-BillableE10.31Type 1 diabetes mellitus with unspecified diabetic retinopathyNon-BillableE10.311Type 1 diabetes mellitus with unspecified diabetic retinopathy with macular edemaBillableE10.319Type 1 diabetes mellitus with unspecified diabetic retinopathy without macular edemaBillableE10.32Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathyNon-BillableE10.321Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edemaBillableE10.329Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edemaBillableE10.33Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathyNon-BillableE10.331Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy with macular edemaBillableE10.339Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edemaBillableE10.34Type 1 diabetes mellitus with severe nonproliferative diabetic retinopathyNon-BillableE10.341Type 1 diabetes mellitus with severe nonproliferative diabetic retinopathy with macular edemaBillableE10.349Type 1 diabetes mellitus with severe nonproliferative diabetic retinopathy without macular edemaBillableE10.35Type 1 diabetes mellitus with proliferative diabetic retinopathyNon-BillableE10.351Type 1 diabetes mellitus with proliferative diabetic retinopathy with macular edemaBillableE10.352Type 1 diabetes mellitus with proliferative diabetic retinopathy with traction retinal detachment involving the maculaBillableE10.353Type 1 diabetes mellitus with proliferative diabetic retinopathy with traction retinal detachment not involving the maculaBillableE10.354Type 1 diabetes mellitus with proliferative diabetic retinopathy with combined traction retinal detachment and rhegmatogenous retinal detachmentBillableE10.355Type 1 diabetes mellitus with stable proliferative diabetic retinopathyBillableE10.359Type 1 diabetes mellitus with proliferative diabetic retinopathy without macular edemaBillableE10.36Type 1 diabetes mellitus with diabetic cataractBillableE10.37Type 1 diabetes mellitus with diabetic macular edema, resolved following treatmentBillableE10.39Type 1 diabetes mellitus with other diabetic ophthalmic complicationBillableE10.4Type 1 diabetes mellitus with neurological complicationsNon-BillableE10.40Type 1 diabetes mellitus with diabetic neuropathy, unspecifiedBillableE10.41Type 1 diabetes mellitus with diabetic mononeuropathyBillableE10.42Type 1 diabetes mellitus with diabetic polyneuropathyBillableE10.43Type 1 diabetes mellitus with diabetic autonomic (poly)neuropathyBillableE10.44Type 1 diabetes mellitus with diabetic amyotrophyBillableE10.49Type 1 diabetes mellitus with other diabetic neurological complicationBillableE10.5Type 1 diabetes mellitus with circulatory complicationsNon-BillableE10.51Type 1 diabetes mellitus with diabetic peripheral angiopathy without gangreneBillableE10.52Type 1 diabetes mellitus with diabetic peripheral angiopathy with gangreneBillableE10.59Type 1 diabetes mellitus with other circulatory complicationsBillableE10.6Type 1 diabetes mellitus with other specified complicationsNon-BillableE10.61Type 1 diabetes mellitus with diabetic arthropathyNon-BillableE10.610Type 1 diabetes mellitus with diabetic neuropathic arthropathyBillableE10.618Type 1 diabetes mellitus with other diabetic arthropathyBillableE10.62Type 1 diabetes mellitus with skin complicationsNon-BillableE10.620Type 1 diabetes mellitus with diabetic dermatitisBillableE10.621Type 1 diabetes mellitus with foot ulcerBillableE10.622Type 1 diabetes mellitus with other skin ulcerBillableE10.628Type 1 diabetes mellitus with other skin complicationsBillableE10.63Type 1 diabetes mellitus with oral complicationsNon-BillableE10.630Type 1 diabetes mellitus with periodontal diseaseBillableE10.638Type 1 diabetes mellitus with other oral complicationsBillableE10.64Type 1 diabetes mellitus with hypoglycemiaNon-BillableE10.641Type 1 diabetes mellitus with hypoglycemia with comaBillableE10.649Type 1 diabetes mellitus with hypoglycemia without comaBillableE10.65Type 1 diabetes mellitus with hyperglycemiaBillableE10.69Type 1 diabetes mellitus with other specified complicationBillableE10.8Type 1 diabetes mellitus with unspecified complicationsBillableE10.9Type 1 diabetes mellitus without complicationsBillableE10.AType 1 diabetes mellitus, presymptomaticNon-BillableE10.A0Type 1 diabetes mellitus, presymptomatic, unspecifiedBillableE10.A1Type 1 diabetes mellitus, presymptomatic, Stage 1BillableE10.A2Type 1 diabetes mellitus, presymptomatic, Stage 2Billable
Related Codes

Frequently Asked Questions

Is E10 a billable ICD-10-CM code?

No, E10 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does E10 mean?

E10 is the ICD-10-CM diagnosis code for "Type 1 diabetes mellitus". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is E10 in?

E10 is located in Section E08-E13 — "Diabetes mellitus" within Chapter 4 of the ICD-10-CM Tabular List.

What are the sub-codes of E10?

E10 has 9 sub-code(s) that provide more specific detail: E10.1, E10.2, E10.3, E10.4, E10.5 and more.

When should I use E10?

Use E10 when the patients documented diagnosis matches "Type 1 diabetes mellitus" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Type 1 diabetes mellitus?

The ICD-10-CM code for Type 1 diabetes mellitus is E10.

Can E10 be used for primary diagnosis?

No, E10 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is E10 in?

E10 is in Chapter 4 of the ICD-10-CM Tabular List.

What conditions are excluded from E10?

Type 1 Excludes for E10 include: diabetes mellitus due to underlying condition (E08.-); drug or chemical induced diabetes mellitus (E09.-); gestational diabetes (O24.4-) and more.

Is E10 valid for 2026?

Yes, E10 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousE09.9Drug or chemical induced diabetes mellitus without complicationsNext →E10.1Type 1 diabetes mellitus with ketoacidosis
Code Details
E10
Type 1 diabetes mellitus
Non-Billable / Non-Specific Code
4 — Endocrine, nutritional and metabolic diseases (E00-E89)
E08-E13 — Diabetes mellitus
2026 ICD-10-CM