Diabetes Mellitus – Definitions & ICD 11 Codes

Definition of Diabetes Mellitus: A metabolic disorder with heterogenous aetiologies which is characterised by chronic hyperglycaemia and disturbances of carbohydrate, fat and protein metabolism resulting from defects in insulin secretion, insulin action, or both.

Coded Elsewhere:

  • Diabetes mellitus in pregnancy (JA63)
  • Neonatal diabetes mellitus (KB60.2)

Type 1 diabetes mellitus

Definition of Type 1 diabetes mellitus: Diabetes mellitus type 1 (type 1 diabetes, T1DM, formerly insulin dependent or juvenile diabetes) is a form of diabetes mellitus that results from destruction of insulin-producing beta cells, mostly by autoimmune mechanisms. The subsequent lack of insulin leads to increased blood and urine glucose.

ICD 11 Codes For Type 1 diabetes mellitus

  5A10  Type 1 diabetes mellitus

Exclusions:

  • Type 2 diabetes mellitus (5A11)
  • Diabetes mellitus, other specified type (5A13)
  • Diabetes mellitus in pregnancy (JA63)

Coded Elsewhere:

  • Pre-existing type 1 diabetes mellitus in pregnancy (JA63.0)

Type 2 diabetes mellitus

Definition of Type 2 diabetes mellitus: Diabetes mellitus type 2 (formerly noninsulin-dependent diabetes mellitus (NIDDM) or adult-onset diabetes) is a metabolic disorder that is characterised by high blood glucose in the context of insulin resistance and relative insulin deficiency.

ICD 11 Codes For Type 2 diabetes mellitus

  5A11  Type 2 diabetes mellitus

Inclusions:

  • non-insulin-dependent diabetes of the young

Exclusions:

  • Diabetes mellitus in pregnancy (JA63)
  • Diabetes mellitus, other specified type (5A13)
  • Idiopathic Type 1 diabetes mellitus (5A10)

Coded Elsewhere:

  • Pre-existing type 2 diabetes mellitus in pregnancy (JA63.1)

Malnutrition-related diabetes mellitus

ICD 11 Codes For Malnutrition-related diabetes mellitus

  5A12  Malnutrition-related diabetes mellitus

Diabetes mellitus other specified type

ICD 11 Codes For Diabetes mellitus other specified type

  5A13  Diabetes mellitus other specified type

Definition of Diabetes mellitus other specified type: Diabetes mellitus which cannot be classified as either Type 1 or Type 2 diabetes mellitus.

Exclusions:

  • Diabetes mellitus in pregnancy (JA63)
  • Type 2 diabetes mellitus (5A11)
  • Idiopathic Type 1 diabetes mellitus (5A10)

5A13.0 Diabetes mellitus due to genetic defects of beta cell function

Definition of Diabetes mellitus due to genetic defects of beta cell function: Other specified diabetes mellitus due to genetic defects of beta cell function is a form of diabetes, which is associated with monogenetic defects in beta-cell function.

5A13.1 Diabetes mellitus due to genetic defects in insulin action

Definition of Diabetes mellitus due to genetic defects in insulin action: Other specified diabetes mellitus due to genetic defects in insulin action is a form of diabetes, which results from genetically determined abnormalities of insulin action. The metabolic abnormalities associated with mutations of the insulin receptor may range from hyperinsulinemia and modest hyperglycaemia to severe diabetes.

5A13.2 Diabetes mellitus due to diseases of the exocrine pancreas

Definition of Diabetes mellitus due to diseases of the exocrine pancreas: Other specified diabetes mellitus due to diseases of the exocrine pancreas is a form of diabetes, which caused by any process that diffusely injures the pancreas. Acquired processes include pancreatitis, trauma, infection, pancreatectomy, and pancreatic carcinoma. With the exception of that caused by cancer, damage to the pancreas must be extensive for diabetes to occur.

5A13.3 Diabetes mellitus due to endocrinopathies

Definition of Diabetes mellitus due to endocrinopathies: Other specified diabetes mellitus due to endocrinopathies is a form of diabetes caused by several hormones (e.g., growth hormone, cortisol, glucagon, epinephrine), which antagonize insulin action. Excess amounts of these hormones (e.g., acromegaly, Cushing’s syndrome, glucagonoma, pheochromocytoma, respectively) can cause diabetes. This generally occurs in individuals with preexisting defects in insulin secretion, and hyperglycaemia typically resolves when the hormone excess is resolved.

5A13.4 Diabetes mellitus due to drug or chemical

Definition of Diabetes mellitus due to drug or chemical: Other specified diabetes mellitus due to drug or chemical is a form of diabetes, which is caused by drug or chemical substance that impairs insulin secretion and insulin action.

5A13.5 Diabetes mellitus due to uncommon forms of immune-mediated diabetes

Definition of Diabetes mellitus due to uncommon forms of immune-mediated diabetes: Other specified diabetes mellitus due to uncommon forms of immune-mediated diabetes is a form of diabetes, which is caused by two known conditions. The stiff-man syndrome is an autoimmune disorder of the central nervous system characterised by stiffness of the axial muscles with painful spasms. Patients usually have high titres of the GAD autoantibodies, and approximately one-third will develop diabetes.

5A13.6 Diabetes mellitus due to other genetic syndromes

Definition of Diabetes mellitus due to other genetic syndromes: Other specified diabetes mellitus due to other genetic syndromes is a form of diabetes, which is associated with genetic syndromes.

Coding Note:

  • Use additional code, if desired, to identify any associated genetic syndrome

Coded Elsewhere:

  • Wolfram syndrome (5A61.5)
  • Maternally inherited diabetes and deafness (LD2H.Y)
  • Thiamine-responsive megaloblastic anaemia syndrome (5C63.Y)
  • Woodhouse-Sakati syndrome (5A61.0)
  • Mitochondrial myopathy with diabetes mellitus (8C73.Y)

5A13.7 Diabetes mellitus due to clinically defined subtypes or syndromes

Definition of Diabetes mellitus due to clinically defined subtypes or syndromes: Diabetes mellitus that has clinically defined subtypes or associated syndromes

5A13.Y Diabetes mellitus due to other specified cause

Diabetes mellitus type unspecified

ICD 11 Codes For Diabetes mellitus type unspecified

  5A14  Diabetes mellitus type unspecified

Exclusions:

  • Idiopathic Type 1 diabetes mellitus (5A10)
  • Type 2 diabetes mellitus (5A11)
  • Diabetes mellitus, other specified type (5A13)
  • Diabetes mellitus in pregnancy (JA63)

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