Specific code 2014 ICD-9-CM Diagnosis Code 298.9
Unspecified psychosis
  • Billable Code
  • 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.
Disease Synonyms
  • Clouded consciousness
  • Confusion
  • Psychosis in childbirth
  • Psychosis in pregnancy
  • Psychotic
  • Psychotic disorder
Clinical Information
  • A disorder characterized by personality change, impaired functioning, and loss of touch with reality. It may be a manifestation of schizophrenia, bipolar disorder or brain tumor.
  • A mental disorder characterized by personality change, impaired functioning, and loss of touch with reality. It may be a manifestation of schizophrenia, bipolar disorder, or brain tumor.
  • A severe mental disorder in which a person loses the ability to recognize reality or relate to others. The person is not able to cope with the demands of everyday life. Symptoms include being paranoid, having false ideas about what is taking place or who one is, and seeing, hearing, or feeling things that are not there.
  • 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)
  • Psychotic disorders are severe mental disorders that cause abnormal thinking and perceptions. People with psychoses lose touch with reality. Two of the main symptoms are delusions and hallucinations. Delusions are false beliefs, such as thinking that someone is plotting against you or that the tv is sending you secret messages. Hallucinations are false perceptions, such as hearing, seeing or feeling something that is not there. schizophrenia is one type of psychotic disorder.treatment for psychotic disorders varies by disorder. It might involve drugs to control symptoms, and talk therapy. Hospitalization is an option for serious cases where a person might be dangerous to himself or others.
  • Severest class of psychological disorders, characterized by one or more of severe affective disturbances, profound introspection, withdrawal from reality, hallucinations, or regression.
  • What: psychosis. Psychosis: a loss of contact with reality, a thought disorder, or a change of personality or behavior often associated with delusions, illusions, or hallucinations. Why: psychosis may occur in systemic lupus erythematosus, mixed connective tissue disease, or with the administration of steroids, cimetadine (tagemet), or reserpine. How: a psychosis probably exists if a patient demonstrates one or more of the following major criteria: major criteria loss of contact with reality -- evidenced by the misinterpretation of the environment as hostile when friendly or vice versa, generally causing bizarre responses to normal and usual environmental stimuli. Thought disturbance -- evidenced by incoherence, marked illogical content, marked loose associations, or patient's admission of mental confusion and abnormal rate of mental activity. Personality/behavior changes -- characterized by rapid onset and reversals of previous behavior patterns, often observed by reliable family member or friend. The diagnosis is further strengthened by the presence of one or more of the following minor criteria: minor criteria delusions -- firmly held beliefs that cannot be dissuaded by logical discussion; generally of a threatening, powerful, or grandiose nature. Illusions -- misperceptions of environmental stimuli, e.g. Perceiving a person instead of an actual tree shadow. Hallucinations -- perceptions without environmental stimuli, e.g. Hearing voices/noises or seeing a face/vision. Refs: 1) "differential diagnosis of psychotic features". In diagnostic and statistical manual of mental disorders, 3rd ed. (dsm iii). Washington, d.c.: american psychiatric association, 1980. 2) rothfield, n: "clinical features of systemic lupus erythematosus". In textbook of rheumatology (ch. 69). Philadelphia: w.b. Saunders co., 1981. 3) bennet, rm and spargo, bh: neuropsychiatric problems in mixed connective tissue disease. Am j med 65(6), december 1978, pp. 955-62. Dn19307-1. 4) steinberg, ad: "management of systemic lupus erythematosus". In textbook of rheumatology (ch. 70). Philadelphia: w.b. Saunders co., 1981.
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 310.89
      • 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 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.