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List of Diseases and Injuries

Intellectual Disabilities (F70-F79)


Code First: any associated physical or developmental disorders
Excludes 1: borderline intellectual functioning, IQ above 70 to 84 (R41.83)

F70Mild intellectual disabilities
› IQ level 50-55 to approximately 70
› Mild mental subnormality

F71Moderate intellectual disabilities
› IQ level 35-40 to 50-55
› Moderate mental subnormality

F72Severe intellectual disabilities
› IQ 20-25 to 35-40
› Severe mental subnormality

F73Profound intellectual disabilities
› IQ level below 20-25
› Profound mental subnormality

F78Other intellectual disabilities

F78.AOther genetic related intellectual disabilities

F78.A1SYNGAP1-related intellectual disability
Code Also: , if applicable, any associated:
› autism spectrum disorder (F84.0)
› autistic disorder (F84.0)
› encephalopathy (G93.4-)
› epilepsy and recurrent seizures (G40.-)
› other pervasive developmental disorders (F84.8)
› pervasive developmental disorder, NOS (F84.9)

F78.A9Other genetic related intellectual disability
Code Also: , if applicable, any associated disorders

F79Unspecified intellectual disabilities
› Mental deficiency NOS
› Mental subnormality NOS