E10.64
Type 1 diabetes mellitus with hypoglycemia
E10.64 is a non-billable ICD-10-CM code header for type 1 diabetes mellitus with hypoglycemia. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are E10.641 Type 1 diabetes mellitus with hypoglycemia with coma and E10.649 Type 1 diabetes mellitus with hypoglycemia without coma. Its coding notes include a Use additional code instruction and 10 Excludes1 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Diabetes codes combine the type, the body system and the complication, and as many codes as needed are assigned to describe all complications.
Use additional code
Add the listed code as a secondary code, if known.
- code for hypoglycemia level, if applicable (E16.A-)
Excludes1
Not coded here. The listed conditions generally should not be reported 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.-)
Includes
Further defines or gives examples of the content of the category.
- 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)
Notes
Also from chapter/block level (1 note)
- All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.