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Mental Retardation - IQ range

·     317    Mild MR

IQ Level 50-55 to approximately 70

·     318.0 Moderate Retardation

IQ Level 35-40 to 50-55

·     318.1 Severe MR

IQ Level 20-25 to 35-40

·     318.2 Profound MR

IQ Level Below 20 or 25

 V62.89  Borderline Intellectual Functioning  IQ 71 - 84   - also coded on Axis II

·     319    MR, Severity Unspecified

 

Class IQ
Profound mental retardation Below 20
Severe mental retardation 20–34
Moderate mental retardation 35–49
Mild mental retardation 50–69
Borderline intellectual functioning 70–80
 
 
 
 
 (DSM-IV Code )
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Common ICD-9

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