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:** - 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.-)