unspecified specific delays in development (include: developmental disorder nos) 316 psychic factors associated with diseases classified elsewhere mental retardation (317–319) 317 mild mental retardation (include: feeble-minded, high-grade defect, mild mental subnormality, moron) 318 other specified mental retardation 318.0 moderate mental retardation (include: imbecile, moderate mental subnormality) 318.1 severe mental retardation (include: severe mental subnormality) 318.2 profound mental retardation (include: idiocy, profound mental subnormality) 319 unspecified mental retardation (include: mental deficiency nos, mental subnormality nos)