F70 | Mild mental retardation | |||||||
[See before F70 for subdivisions ] | ||||||||
Approximate IQ range of 50 to 69 (in adults, mental age from 9 to under 12 years). Likely to result in some learning difficulties in school. Many adults will be able to work and maintain good social relationships and contribute to society. | ||||||||
Includes: | feeble-mindedness
mild mental subnormality |
F71 | Moderate mental retardation | |||||||
[See before F70 for subdivisions ] | ||||||||
Approximate IQ range of 35 to 49 (in adults, mental age from 6 to under 9 years). Likely to result in marked developmental delays in childhood but most can learn to develop some degree of independence in self-care and acquire adequate communication and academic skills. Adults will need varying degrees of support to live and work in the community. | ||||||||
Includes: | moderate mental subnormality
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F72 | Severe mental retardation | |||||||
[See before F70 for subdivisions ] | ||||||||
Approximate IQ range of 20 to 34 (in adults, mental age from 3 to under 6 years). Likely to result in continuous need of support. | ||||||||
Includes: | severe mental subnormality
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F73 | Profound mental retardation | |||||||
[See before F70 for subdivisions ] | ||||||||
IQ under 20 (in adults, mental age below 3 years). Results in severe limitation in self-care, continence, communication and mobility. | ||||||||
Includes: | profound mental subnormality
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F78 | Other mental retardation | |||||||
[See before F70 for subdivisions ] |
F79 | Unspecified mental retardation | |||||||
[See before F70 for subdivisions ] | ||||||||
Includes: | mental:
· deficiency NOS · subnormality NOS |