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E10 ⚠ Non-billable

Type 1 diabetes mellitus

ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases

Code
E10
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Endocrine, Nutritional and Metabolic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

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)
Excludes1 — never code together
  • 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.-)

Frequently asked questions

What is ICD-10 code E10?
ICD-10-CM code E10 represents Type 1 diabetes mellitus. It is a non-billable header code requiring a more specific subcategory in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is E10 billable?
No. E10 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is E10 in?
E10 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.

Related codes in the E10 category

E10.1 Type 1 diabetes mellitus with ketoacidosis Non-billable E10.2 Type 1 diabetes mellitus with kidney complications Non-billable E10.3 Type 1 diabetes mellitus with ophthalmic complications Non-billable E10.10 Type 1 diabetes mellitus with ketoacidosis without coma Billable E10.11 Type 1 diabetes mellitus with ketoacidosis with coma Billable E10.21 Type 1 diabetes mellitus with diabetic nephropathy Billable E10.22 Type 1 diabetes mellitus with diabetic chronic kidney disease Billable E10.29 Type 1 diabetes mellitus with other diabetic kidney complication Billable

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