Free ICD-9-CM Diagnosis Codes Lookup
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2008
> Mental Disorders
290-319
> Mental Retardation
317-319
> Other specified mental retardation
318.*
>
2008 ICD-9-CM Diagnosis Code 318.1
Severe mental retardation
318.0
318.2
318.1 is a billable ICD-9-CM medical code that can be used to specify a diagnosis on a reimbursement claim.
Newer versions of 318.1:
2009
2010
Diagnosis Definition(s)
IQ 20-34.
Also applicable to/known as
IQ 20-34
Severe mental subnormality
ICD-9-CM Volume 2 Index Entries That Refer To 318.1
IQ
20-34
318.1
Mental - see also condition
subnormality (see also Retardation, mental)
319
severe
318.1
Retardation
mental
319
severe, IQ 20-34
318.1
Subnormal, subnormality
mental (see also Retardation, mental)
319
severe
318.1