Specific code 2010 ICD-9-CM Diagnosis Code 298.9
Unspecified psychosis
  • Short description: Psychosis NOS.
  • ICD-9-CM 298.9 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 298.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2010 version of ICD-9-CM 298.9.
  • More recent version(s) of ICD-9-CM 298.9: 2011 2012 2013 2014.
Disease Synonyms
  • Clouded consciousness
  • Confusion
  • Psychosis in childbirth
  • Psychosis in pregnancy
  • Psychotic
  • Psychotic disorder
Applies To
  • Atypical psychosis
  • Psychosis NOS
  • Psychotic disorder NOS
Convert to ICD-10-CM: 298.9 converts approximately to:
  • 2014 ICD-10-CM F29 Unspecified psychosis not due to a substance or known physiological condition
ICD-9-CM Volume 2 Index entries containing back-references to 298.9:
  • Alienation, mental (see also Psychosis) 298.9
  • Condition - see also Disease
    • psychiatric 298.9
  • Confusion, confused (mental) (state) (see also State, confusional) 298.9
    • reactive (from emotional stress, psychological trauma) 298.2
  • Derangement
    • mental (see also Psychosis) 298.9
  • Deterioration
    • mental (see also Psychosis) 298.9
  • Disease, diseased - see also Syndrome
    • mental (see also Psychosis) 298.9
    • psychiatric (see also Psychosis) 298.9
    • psychotic (see also Psychosis) 298.9
  • Disorder - see also Disease
    • mental (nonpsychotic) 300.9
      • affecting management of pregnancy, childbirth, or puerperium 648.4
      • drug-induced 292.9
        • hallucinogen persisting perception 292.89
        • specified type NEC 292.89
      • due to or associated with
      • induced by drug 292.9
      • neurotic (see also Neurosis) 300.9
      • of infancy, childhood or adolescence 313.9
      • persistent
        • other
          • due to conditions classified elsewhere 294.8
        • unspecified
          • due to conditions classified elsewhere 294.9
      • presenile 310.1
      • previous, affecting management of pregnancy V23.89
      • psychoneurotic (see also Neurosis) 300.9
      • psychotic (see also Psychosis) 298.9
      • specific, following organic brain damage 310.9
        • cognitive or personality change of other type 310.1
        • frontal lobe syndrome 310.0
        • postconcussional syndrome 310.2
        • specified type NEC 310.8
      • transient
        • in conditions classified elsewhere 293.9
    • psychotic (see also Psychosis) 298.9
  • Episode
    • psychotic (see also Psychosis) 298.9
  • Hallucinosis 298.9
    • alcohol-induced (acute) 291.3
  • Insanity, insane (see also Psychosis) 298.9
    • adolescent (see also Schizophrenia) 295.9
    • alternating (see also Psychosis, affective, circular) 296.7
    • delusional 298.9
  • Loss
    • mind (see also Psychosis) 298.9
  • Lunacy (see also Psychosis) 298.9
  • Lycanthropy (see also Psychosis) 298.9
  • Madness (see also Psychosis) 298.9
  • Mental - see also condition
    • deterioration (see also Psychosis) 298.9
  • Monomania (see also Psychosis) 298.9
  • Moria (see also Psychosis) 298.9
  • Nosomania 298.9
  • Parergasia 298.9
  • Psychosis 298.9
    • affecting management of pregnancy, childbirth, or puerperium 648.4
    • alternating (see also Psychosis, manic-depressive, circular) 296.7
    • anergastic (see also Psychosis, organic) 294.9
    • borderline (schizophrenia) (see also Schizophrenia) 295.5
      • of childhood (see also Psychosis, childhood) 299.8
    • childhood, with origin specific to 299.9
    • circular (see also Psychosis, manic-depressive, circular) 296.7
    • climacteric (see also Psychosis, involutional) 298.8
    • depressive (see also Psychosis, affective) 296.2
    • disintegrative, childhood (see also Psychosis, childhood) 299.1
    • due to or associated with physical condition (see also Psychosis, organic) 294.9
    • excitation (psychogenic) (reactive) 298.1
    • exhaustive (see also Reaction, stress, acute) 308.9
    • hypomanic (see also Psychosis, affective) 296.0
    • incipient 298.8
      • schizophrenic (see also Schizophrenia) 295.5
    • infantile (see also Psychosis, childhood) 299.0
    • in
      • conditions classified elsewhere
      • pregnancy, childbirth, or puerperium 648.4
    • interactional (childhood) (see also Psychosis, childhood) 299.1
    • Korsakoff's, Korakov's, Korsakow's (nonalcoholic) 294.0
    • mania (phase) (see also Psychosis, affective) 296.0
    • menopausal (see also Psychosis, involutional) 298.8
    • mixed schizophrenic and affective (see also Schizophrenia) 295.7
    • multi-infarct (cerebrovascular) (see also Psychosis, arteriosclerotic) 290.40
    • organic NEC 294.9
      • due to or associated with
        • addiction
          • alcohol (see also Psychosis, alcoholic) 291.9
          • drug (see also Psychosis, drug) 292.9
        • alcohol intoxication, acute (see also Psychosis, alcoholic) 291.9
        • alcoholism (see also Psychosis, alcoholic) 291.9
        • arteriosclerosis (cerebral) (see also Psychosis, arteriosclerotic) 290.40
        • cerebrovascular disease
          • acute (psychosis) 293.0
          • arteriosclerotic (see also Psychosis, arteriosclerotic) 290.40
        • childbirth - see Psychosis, puerperal
        • dependence
          • alcohol (see also Psychosis, alcoholic) 291.9
          • drug 292.9
        • disease
          • alcoholic liver (see also Psychosis, alcoholic) 291.9
          • brain
            • arteriosclerotic (see also Psychosis, arteriosclerotic) 290.40
          • cerebrovascular
            • acute (psychosis) 293.0
            • arteriosclerotic (see also Psychosis, arteriosclerotic) 290.40
          • endocrine or metabolic 293.9
          • Jakob-Creutzfeldt 046.19
          • liver, alcoholic (see also Psychosis, alcoholic) 291.9
        • disorder
          • cerebrovascular
          • endocrine or metabolic 293.9
        • epilepsy
        • Huntington's chorea
        • infection
        • intoxication
          • alcoholic (acute) (see also Psychosis, alcoholic) 291.9
          • drug (see also Psychosis, drug) 292.9
        • ischemia
          • cerebrovascular (generalized) (see also Psychosis, arteriosclerotic) 290.40
        • Jakob-Creutzfeldt disease (syndrome) 046.19
        • multiple sclerosis
        • physical condition NEC 293.9
        • presenility 290.10
        • puerperium - see Psychosis, puerperal
        • sclerosis, multiple
        • senility 290.20
        • status epilepticus
        • trauma
          • brain (birth) (from electrical current) (surgical) 293.9
        • unspecified physical condition 293.9
      • infective 293.9
      • posttraumatic 293.9
      • specified type NEC 294.8
      • transient 293.9
    • polyneuritic, alcoholic 291.1
    • postpartum - see Psychosis, puerperal
    • prepsychotic (see also Schizophrenia) 295.5
    • presbyophrenic (type) 290.8
    • presenile (see also Dementia, presenile) 290.10
    • schizo-affective (depressed) (excited) (see also Schizophrenia) 295.7
    • schizophrenia, schizophrenic (see also Schizophrenia) 295.9
    • situational (reactive) 298.8
    • symbiotic (childhood) (see also Psychosis, childhood) 299.1
  • Psychotic (see also condition) 298.9
    • episode 298.9
      • due to or associated with physical conditions (see also Psychosis, organic) 293.9
  • Reaction
    • psychotic (see also Psychosis) 298.9
      • depressive 298.0
      • due to or associated with physical condition (see also Psychosis, organic) 293.9
      • involutional (see also Psychosis, affective) 296.2
  • State
  • Stupor 780.09
    • mental (anergic) (delusional) 298.9
  • Unsoundness of mind (see also Psychosis) 298.9
  • Vesania (see also Psychosis) 298.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 298.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2010 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.