30-Day Readmission for Mental Health and Substance Use

Identifying Attributes

Care Settings
Hospital Care
Country
Canada
Publishing Organisation
Canadian Institute for Health Information (CIHI)
Type of Quality Indicator
Outcome
IOM Quality Dimension
Effectiveness
Domain
Readmission

Defining Attributes

Definition

This indicator measures the risk-adjusted rate of readmission following discharge for mental health and substance use (MHSU) disorders.

Numerator

Cases within the denominator with a readmission for MHSU disorders within 30 days of discharge after the index episode of care.

Denominator

Number of episodes of care for an MHSU disorder discharged between April 1 and March 1 of the fiscal year.

Exclusions

Records with: invalid health card number, invalid code for province issuing health card number, missing age, invalid admission date, invalid discharge date. Episodes with discharge as death. Cadaveric donor or stillbirth records.

Use of Risk Adjustment
Yes
Risk Adjustments

See detailed specifications for risk adjustment: www.cihi.ca/sites/default/files/document/model-specifications.pdf

Stratifications

By age group, recorded sex or gender, neighbourhood income quintile, urban versus rural/remote, mental health category and reporting level: National, Province/Territory, Region.

Data Attributes

Type of Data Collection
Standardised clinical data
Data Collection Methods

Discharge Abstract Database (DAD), Hospital Morbidity Database (HMDB), National Ambulatory Care Reporting System (NACRS) and Ontario Mental Health Reporting System (OMHRS)

Frequency of Data Collection
Annually
Frequency of Data Collection in Days
365
Reporting Methods

Online tool: Your Health System

Reporting Frequency
Annually
Reporting Frequency in Days
365
Indicator Has Recommended Targets
No

Source and Reference Attributes

Link to Measurement Tools
Quality Indicator Confirmed to be Part of a Program Used to Monitor Quality and Safety of Care Among Older People at a Population-Level between 2012-2022
Yes
Assessed by the Australian Consortium for Aged Care Collaborators as Generally Containing Good Properties (Importance and Scientific Acceptability)
No
Australian Consortium for Aged Care Endorsed
No
Identified by PHARMA-Care Project
No
Upload Date
23 July 2025