E10.649 – Type 1 diabetes mellitus with hypoglycemia without coma

ICD-10-CM 2027 diagnosis code · Diabetes mellitus

Billable code

ICD-10-CM code E10.649
Code
E10.649 (claims format: E10649)
Description
Type 1 diabetes mellitus with hypoglycemia without coma
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
4. Endocrine, nutritional and metabolic diseases (E00-E89)
Block
E08-E13 Diabetes mellitus
Parent codes
E10 › E10.6 › E10.64

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

E10 – Type 1 diabetes mellitus

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 (not coded here):
  • 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.-)

E10.64 – Type 1 diabetes mellitus with hypoglycemia

Use additional code:
  • code for hypoglycemia level, if applicable (E16.A-)

Index terms for E10.649

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in E10.64

Frequently asked questions

What is ICD-10 code E10.649?

E10.649 is the ICD-10-CM code for type 1 diabetes mellitus with hypoglycemia without coma, in the block E08-E13 (Diabetes mellitus).

Is E10.649 a billable code?

Yes. E10.649 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does E10.649 belong to?

It belongs to category E10 – Type 1 diabetes mellitus.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.