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 Other mental retardation==

F79 Unspecified mental retardation

 * Includes: mental deficiency NOS
 * mental subnormality NOS

=Pervasive and specific developmental disorders (F80-F89)=

F80 Specific developmental disorders of speech and language

 * F80.0 Phonological disorder
 * Dyslalia
 * Functional speech articulation disorder
 * Lalling
 * Lisping
 * Phonological developmental disorder
 * Speech articulation developmental disorder
 * Excludes1: speech articulation impairment due to aphasia NOS (R47.01)
 * speech articulation impairment due to apraxia (R48.2)
 * Excludes2: speech articulation impairment due to hearing loss (F80.4)
 * speech articulation impairment due to mental retardation (F70-F79)
 * speech articulation impairment with expressive language developmental disorder (F80.1)
 * speech articulation impairment with mixed receptive expressive language developmental disorder (F80.2)
 * F80.1 Expressive language disorder
 * Developmental dysphasia or aphasia, expressive type
 * Excludes1: mixed receptive-expressive language disorder (F80.2)
 * dysphasia and aphasia NOS (R47.-)
 * Excludes2: acquired aphasia with epilepsy [Landau-Kleffner] (F80.3)
 * selective mutism (F94.0)
 * mental retardation (F70-F79)
 * pervasive developmental disorders (F84.-)
 * F80.2 Mixed receptive-expressive language disorder
 * Developmental dysphasia or aphasia, receptive type
 * Developmental Wernicke's aphasia
 * Excludes1: central auditory processing disorder (H93.25)
 * dysphasia or aphasia NOS (R47.-)
 * expressive language disorder (F80.1)
 * expressive type dysphasia or aphasia (F80.1)
 * word deafness (H93.25)
 * Excludes2: acquired aphasia with epilepsy [Landau-Kleffner] (F80.3)
 * pervasive developmental disorders (F84.-)
 * selective mutism (F94.0)
 * mental