Conditions with disorders of intellectual development as a relevant clinical feature

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

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• Lesch-Nyhan syndrome  (5C55.01)
• Hydrocephalus with stenosis of the aqueduct of Sylvius  (LA04.0)
• Pelizaeus-Merzbacher disease  (8A44.0)
• Hereditary sensory and autonomic neuropathy type IV  (8C21.2)
• Joubert syndrome  (LD20.00)
• Phenylketonuria  (5C50.0)
• Tyrosinaemia type 2  (5C50.12)
• Carbamoylphosphate synthetase deficiency  (5C50.A1)
• Carnosinaemia  (5C50.F1)
• Homocarnosinosis  (5C50.F2)
• Syndromes with lissencephaly as a major feature  (LD20.1)
• Sjögren-Larsson syndrome  (5C52.03)
• Polymicrogyria  (LA05.50)
• Porencephaly  (LA05.60)
• Pyruvate dehydrogenase complex deficiency  (5C53.02)
• Brain-lung-thyroid syndrome  (CB04.5)
• Metachromatic leukodystrophy  (5C56.02)
• Neuronal ceroid lipofuscinosis  (5C56.1)
• Mucopolysaccharidosis type 2  (5C56.31)
• Mucopolysaccharidosis type 6  (5C56.33)
• Oculocerebrorenal syndrome  (5C60.0)
• CATCH 22 phenotype  (LD44.N0)
• Langer-Giedion syndrome  (LD24.80)
• Crigler-Najjar syndrome  (5C58.00)
• Fragile X chromosome  (LD55)
• Incontinentia pigmenti  (LD27.00)
• Tuberous sclerosis  (LD2D.2)
• Noonan syndrome  (LD2F.15)
• Congenital rubella syndrome  (KA62.8)
• Congenital cytomegalovirus infection  (KA62.3)
• Complete trisomy 21  (LD40.0)
• Klinefelter syndrome, male with more than two X chromosomes  (LD50.31)
• Intellectual disability – enteropathy – deafness – neuropathy – ichthyosis – keratoderma syndrome  (LD2H.Y)
• Microcephaly - deafness - intellectual disability  (LD2H.Y)
• Schizophrenia - intellectual disability - deafness - retinitis  (LD2H.Y)
• Corneal anaesthesia - deafness - intellectual disability  (LD2H.Y)
• Ataxia - deafness - intellectual disability syndrome  (LD2H.Y)
• Retinitis pigmentosa - intellectual disability - deafness - hypogenitalism  (LD2H.Y)

sections/codes in this section (LD90-LD90)

• Angelman syndrome  (LD90.0)
• Early-onset parkinsonism - intellectual deficit  (LD90.1)
• Pelizaeus-Merzbacher-like disease  (LD90.2)
• Prader-Willi syndrome  (LD90.3)
• Rett syndrome  (LD90.4)
• Other specified conditions with disorders of intellectual development as a relevant clinical feature  (LD90.Y)
• Conditions with disorders of intellectual development as a relevant clinical feature, unspecified  (LD90.Z)

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