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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Other Psychoses 295-299 > ICD-9-CM Diagnosis 298 Other nonorganic psychoses 298 is a non-specific code that cannot be used to specify a diagnosis 298 contains 2 index entries ICD-9-CM Diagnosis 298.0 Depressive type psychosis 298.0 is a specific code that can be used to specify a diagnosis 298.0 contains 12 index entries ICD-9-CM Diagnosis 298.1 Excitative type psychosis 298.1 is a specific code that can be used to specify a diagnosis 298.1 contains 10 index entries ICD-9-CM Diagnosis 298.2 Reactive confusion 298.2 is a specific code that can be used to specify a diagnosis 298.2 contains 7 index entries ICD-9-CM Diagnosis 298.3 Acute paranoid reaction 298.3 is a specific code that can be used to specify a diagnosis 298.3 contains 6 index entries ICD-9-CM Diagnosis 298.4 Psychogenic paranoid psychosis 298.4 is a specific code that can be used to specify a diagnosis 298.4 contains 5 index entries ICD-9-CM Diagnosis 298.8 Other and unspecified reactive psychosis 298.8 is a specific code that can be used to specify a diagnosis 298.8 contains 15 index entries ICD-9-CM Diagnosis 298.9 Unspecified psychosis Disorders in which there is a loss of ego boundaries or a gross impairment in reality testing with delusions or prominent hallucinations. (From DSM-IV, 1994) 298.9 is a specific code that can be used to specify a diagnosis 298.9 contains 35 index entries