2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Neurotic Disorders, Personality Disorders, And Other Nonpsychotic Mental Disorders 300-316 > Personality Disorders 301.* > 2006 ICD-9-CM Diagnosis 301.20 Schizoid personality disorder unspecified View the most recent version of ICD-9-CM 301.20 A personality disorder manifested by a profound defect in the ability to form social relationships, no desire for social involvement, and an indifference to praise or criticism. 301.20 is a specific code that can be used to specify a diagnosis 301.20 contains 4 index entries View the ICD-9-CM Volume 1 301.* hierarchy  Index entries containing 301.20: Disorder - see also Disease personality 301.9 schizoid 301.20 introverted 301.21 schizotypal 301.22 Personality schizoid 301.20 introverted 301.21 schizotypal 301.22 with sexual deviation (see also Deviation, sexual) 302.9 antisocial 301.7 dyssocial 301.7 Schizoid personality 301.20 introverted 301.21 schizotypal 301.22 Schizothymia 301.20 introverted 301.21 schizotypal 301.22