The Ontario Mental Health Reporting System (OMHRS) contains data on adult mental health hospitalizations including in hospital or in psychiatric hospital. Records in OMHRS are updated at admission, discharge, for significant changes in health status and quarterly. OMHRS contains a broad array of information from scores and scales for assessment of patients’ mental health and status.
OMHRS includes mental health data from Ontario facilities with designated adult mental health beds and from 3 facilities outside of Ontario that submit data on a voluntary basis. It also includes records from child/adolescent mental health beds from 2 psychiatric hospitals, and it may include records for patients younger than 18 who were admitted to an adult mental health bed.
Reported mental health data from OMHRS should be complemented by child and youth mental health bed access from DAD and mental-health related emergency department visits from NACRS.
Diagnostic Codes
Mental illness-related hospital admissions or emergency room visits are identified based on most responsible diagnosis or primary diagnoses being coded as Mental and Behavioural Disorders in the International Classification of Diseases and Related Health Problems 10th Revision (ICD-10), or a secondary diagnosis of intentional self-harm, or a primary mental illness diagnosis in OMHRS under the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV).
Psychiatric diagnostic codes in OMHRS should be considered a true diagnosis. Where diagnostic codes are not available for a record, which might be the case for a short admission, or for a patient who has not yet been discharged, provisional diagnostic categories are be considered a best guess for psychiatric diagnosis are can be used as a reference for diagnosis.
The sections below identify the specific ICD-10 and DSM-IV codes used to identify hospital admissions and emergency department visits related to overall mental illness and to specific disorders.
Mental Illness
| OMHRS | DSM-IV: - All
- Excluding 290.x and 294.x (dementia)
|
| DAD & NACRS | ICD-10: Primary diagnosis field equals F04−F99 (excludes dementia) Or secondary diagnoses fields equal - X60−X84: Intentional self-harm
- Y10−Y19: Poisoning undetermined
- Y28: Contact with sharp object, undetermined intent
when primary diagnosis is not F04−F99 |
Mood Disorders
| OMHRS | DSM-IV - 296.x (all 296 codes): Major Depressive and Bipolar Disorders
- 300.4x: Dysthymic Disorder
- 301.13: Cyclothymic Disorder
Or Provisional Diagnosis 6 (Mood Disorders) |
| DAD & NACRS | ICD-10 - F30–F34: Manic, Bipolar Affective, and (Recurrent) Depressive Disorders
- F38: Other Mood (Affective) Disorders
- F39: Unspecified Mood (Affective) Disorders
- F53.0: Mild Mental and Behavioural Disorders Associated with the Puerperium, not elsewhere classified (Post-partum Depression)
|
Psychotic Disorders
| OMHRS | DSM-IV - 295.x (all 295 codes):Schizophrenia
- 297.x (all 297 codes): Delusional Disorders
- 298.x (all 298 codes): Psychotic Disorders
or Provisional Diagnosis 5 (Schizophrenia and other Psychotic Disorders) |
| DAD & NACRS | ICD-10 - F20 (excluding F20.4): Schizophrenia
- F22–F25: Delusional, Psychotic and Schizoaffective Disorders
- F28: Other Non-organic Psychotic Disorders
- F29: Unspecified Non-organic Psychosis
- F53.1: Severe Mental and Behavioural Disorders Associated with the Puerperium, not elsewhere classified (Post-partum Psychosis)
|
Anxiety Disorders
| OMHRS | DSM-IV - 300: Anxiety Disorder NOS
- 300.0x: Panic and Anxiety Disorders
- 300.2x: Phobias
- 300.3x: Obsessive-Compulsive Disorder
- 308.3x: Acute Stress Disorder
- 309.0x: Adjustment Disorder with Depression
- 309.24: Adjustment Disorder with Anxiety
- 309.28: Adjustment Disorder with Mixed Anxiety and Depressed Mood
- 309.3x: Adjustment Disorder with Disturbance of Conduct
- 309.4x: Adjustment Disorder with Mixed Disturbances of Emotions and Conduct
- 309.8x: Post-traumatic Stress Disorders
- 309.9x: Adjustment Disorder, Unspecified
Or Provisional Diagnosis 7 (Anxiety Disorders) Or Provisional Diagnosis 15 (Adjustment Disorders) |
| DAD & NACRS | ICD-10 - F40–F43: Phobias, Anxiety disorders, Obsessive-Compulsive Disorder and Adjustment Disorders
- F48.8: Other Specified Neurotic Disorders
- F48.9: Neurotic Disorder, Unspecified
- F93.1: Phobic anxiety disorder of childhood
- F93.2: Social anxiety disorder of childhood
|
Neurodevelopmental and Personality Disorders
| OMHRS | DSM-IV - 299.x (all 299 codes): Autism-Spectrum Disorders
- 300.16: Factitious Disorder With Predominantly Psychological Signs and Symptoms
- 300.19: Factitious Disorder, NOS
- 301.x (all 301 codes excluding 301.13): Personality Disorders (excluding Cyclothymic Disorder)
- 302.6: Gender Identity Disorder
- 307.1x: Anorexia Nervosa
- 307.2x: Tic Disorders
- 307.3x: Stereotypic Movement Disorders
- 307.5x: Eating Disorders
- 307.6x: Enuresis (Involuntary Urination), Not Due to a Medical Condition
- 307.7x: Encopresis (Involuntary Defecation), Without Constipation and Overflow Incontinence
- 309.21: Separation Anxiety Disorder
- 312.x: Impulse Control Disorders (-omanias)
- 313.23: Selective Mutism
- 313.81: Oppositional Defiant Disorder
- 313.89: Reactive Attachment Disorder of Infancy or Early Childhood,
- 313.9x: Disorder of Infancy Childhood or Adolescence, NOS
- 314.x: Attention-Deficit/Hyperactivity Disorder
- 315.x: Learning Disorders
- 787.6x: Encopresis (Involuntary Defecation), With Constipation and Overflow Incontinence
Or Provisional Diagnosis 1 (Disorders of Childhood/Adolescence) Or Provisional Diagnosis 16 (Personality Disorders) |
| DAD & NACRS | ICD-10 - F21: Schizotypal Disorder
- F60–F62: Specific and Mixed Personality Disorders
- F68: Other Adult Personality Disorders
- F69: Unspecified Adult Personality Disorders
- F80–F84: Specific and Pervasive Developmental Disorders
- F88–F89: Other and Unspecified Psychological Development Disorders
- F90–F92: Hyperkinetic, Conduct and Mixed Disorders of Conduct and Emotions
- F93 (excluding F93.1, F93.2): Emotional Disorders with Childhood Onset (excluding Phobic and Social Anxiety Disorders of Childhood)
- F94: Disorders of Social Functioning with Onset Specific to Childhood and Adolescence
- F95: Tic Disorders
- F98: Other Behavioural and Emotional Disorders with Onset Usually Occurring in Childhood and Adolescence
|
Eating Disorders
| OMHRS | DSM-IV - 307.1x: Anorexia Nervosa
- 307.50: Eating Disorder NOS
- 307.51: Bulimia Nervosa
|
| DAD & NACRS | ICD-10 - F50.0: Anorexia Nervosa
- F50.1: Atypical Anorexia Nervosa
- F50.2: Bulimia Nervosa
- F50.3: Atypical Bulimia Nervosa
- F50.8: Other Eating Disorders
- F50.9: Eating Disorders, Unspecified
|
Substance Use Disorders
| OMHRS | DSM-IV - 291.x (all 291 codes, excluding 291.82): Alcohol-induced Disorders
- 292.x (all 292 codes, excluding 292.85): Other Substance-induced Disorders
- 303.x (all 303 codes): Alcohol
- 304.x (all 304 codes): Substance Dependence
- 305.x (all 305 codes): Substance Abuse
or Provisional Diagnosis 4: Substance-related disorders |
| DAD & NACRS | ICD-10 - F10-F19: Mental and behavioural disorders due to psychoactive substance use
- F55: Abuse of non-dependence-producing substances
|