E10.A1 Type 1 diabetes mellitus, presymptomatic, Stage 1

Billable ICD-10-CM code, FY2026.

Applicable to

• Multiple confirmed islet autoantibodies with normoglycemia

Applies from 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 (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.-)

Applies from E10.A Type 1 diabetes mellitus, presymptomatic

Applicable to

• Early-stage type 1 diabetes mellitus

MS-DRG index

Defines the logic of DRG(s) 008 in MDC PRE.

Code annotations containing back-references to E10.A1

Back-references to E10.A

• Type 1 Excludes: R73.0 Abnormal glucose ("type 1 diabetes mellitus, presymptomatic (E10.A-)")

Back-references to E10

• Code First: D84.81 Immunodeficiency due to conditions classified elsewhere ("diabetes mellitus (E08-E13)")
• Type 1 Excludes: E08 Diabetes mellitus due to underlying condition ("type 1 diabetes mellitus (E10.-)")
• Type 1 Excludes: E09 Drug or chemical induced diabetes mellitus ("type 1 diabetes mellitus (E10.-)")
• Type 1 Excludes: E11 Type 2 diabetes mellitus ("type 1 diabetes mellitus (E10.-)")
• Type 1 Excludes: E13 Other specified diabetes mellitus ("diabetes (mellitus) due to autoimmune process (E10.-)")
• Type 1 Excludes: E13 Other specified diabetes mellitus ("diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction (E10.-)")
• Type 1 Excludes: E13 Other specified diabetes mellitus ("type 1 diabetes mellitus (E10.-)")
• Type 1 Excludes: E74 Other disorders of carbohydrate metabolism ("diabetes mellitus (E08-E13)")
• Type 1 Excludes: E87.2 Acidosis ("diabetic acidosis - see categories E08-E10, E11, E13 with ketoacidosis")
• Type 1 Excludes: G54.5 Neuralgic amyotrophy ("neuralgic amyotrophy in diabetes mellitus (E08-E13 with .44)")
• Type 1 Excludes: G59 Mononeuropathy in diseases classified elsewhere ("diabetic mononeuropathy (E08-E13 with .41)")
• Type 1 Excludes: G63 Polyneuropathy in diseases classified elsewhere ("diabetes mellitus (E08-E13 with .42)")
• Type 1 Excludes: G99.0 Autonomic neuropathy in diseases classified elsewhere ("diabetic autonomic neuropathy (E08-E13 with .43)")
• Type 1 Excludes: H20.0 Acute and subacute iridocyclitis ("iridocyclitis, iritis, uveitis (due to) (in) diabetes mellitus (E08-E13 with .39)")
• Type 1 Excludes: I73.8 Other specified peripheral vascular diseases ("diabetic (peripheral) angiopathy (E08-E13 with .51-.52)")
• Type 1 Excludes: I79.8 Other disorders of arteries, arterioles and capillaries in diseases classified elsewhere ("diabetic (peripheral) angiopathy (E08-E13 with .51-.52)")
• Type 2 Excludes: I96 Gangrene, not elsewhere classified ("gangrene in diabetes mellitus (E08-E13 with .52)")
• Type 1 Excludes: L92.1 Necrobiosis lipoidica, not elsewhere classified ("necrobiosis lipoidica associated with diabetes mellitus (E08-E13 with .620)")
• Type 1 Excludes: L99 Other disorders of skin and subcutaneous tissue in diseases classified elsewhere ("skin disorders in diabetes (E08-E13 with .62-)")
• Type 1 Excludes: M14 Arthropathies in other diseases classified elsewhere ("diabetes mellitus (E08-E13 with .61-)")
• Type 1 Excludes: M14.6 Charcôt's joint ("Charcôt's joint in diabetes mellitus (E08-E13 with .610)")
• Type 1 Excludes: M90 Osteopathies in diseases classified elsewhere ("diabetes mellitus (E08-E13 with .69-)")
• Type 1 Excludes: N08 Glomerular disorders in diseases classified elsewhere ("diabetes (E08-E13 with .21)")
• Type 1 Excludes: N16 Renal tubulo-interstitial disorders in diseases classified elsewhere ("renal tubular degeneration in diabetes (E08-E13 with .29)")
• Type 1 Excludes: N76.82 Fournier disease of vagina and vulva ("gangrene in diabetes mellitus (E08-E13 with .52)")
• Code Also: N76.82 Fournier disease of vagina and vulva (", if applicable, diabetes mellitus (E08-E13 with .9)")
• Use Additional: O24.0 Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium ("code from category E10 to further identify any manifestations")
• Type 1 Excludes: Q45.3 Other congenital malformations of pancreas and pancreatic duct ("congenital diabetes mellitus (E10.-)")
• Type 1 Excludes: R40 Somnolence, stupor and coma ("somnolence, stupor and coma in diabetes (E08-E13)")
• Type 1 Excludes: R73 Elevated blood glucose level ("diabetes mellitus (E08-E13)")
• Type 1 Excludes: R73.0 Abnormal glucose ("diabetes mellitus (E08-E13)")

Diagnosis Index entries for E10.A1

• Autoantibodies, multiple confirmed islet, with normoglycemia
• Diabetes, diabetic (mellitus) (sugar) › type 1 › presymptomatic › Stage 1

Nearby codes

• E10.69 Type 1 diabetes mellitus with other specified complication
• E10.8 Type 1 diabetes mellitus with unspecified complications
• E10.9 Type 1 diabetes mellitus without complications
• E10.A Type 1 diabetes mellitus, presymptomatic
• E10.A0 Type 1 diabetes mellitus, presymptomatic, unspecified
• E10.A1 Type 1 diabetes mellitus, presymptomatic, Stage 1 (this code)
• E10.A2 Type 1 diabetes mellitus, presymptomatic, Stage 2