2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Other Psychoses 295-299 > 2006 ICD-9-CM Diagnosis 298 Other nonorganic psychoses View the most recent version of ICD-9-CM 298 298 is a non-specific code that cannot be used to specify a diagnosis 298 contains 2 index entries 298 Includes psychotic conditions due to or provoked by: emotional stress environmental factors as major part of etiology  Index entries containing 298: Psychosis 298.9 puerperal specified type - see categories 295-298 senile NEC 290.20 specified type - see categories 295-298