APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
Applies
Subpopulation (s)
Project Title
Date Range
yyyy/mm/dd
to
yyyy/mm/dd
Other date range criteria:
Discharge Abstracts Database (Hospital Separations)
(April 1, 1985 onwards)
Includes discharges, transfers and deaths of in-patients from acute care hospitals in BC, including day surgeries. Fields are available
in all years unless otherwise noted. Note: Files are grouped into fiscal years by separation date, not the date of admission.
Admissions Related
BC hospital number – Replaced by project-specific
identification number
OR
BC hospital number (unencrypted) – Research
rationale describing why this field is required must
be supplied before it will be considered for release:
A unique three-digit number indicating the facility
submitting the abstract
Hospital size
Groups hospitals according to their bed capacity 90/91 – 00/01 90/91-00/01
Institution number for Out of Province (OOP) facilities
91/92 onward
Institution numbers for out of province facilities 91/92
unique
– onward
to
each province/territory. Note coding changes in 2000.
Private hospital number
A facility identifier for British Columbia (BC) private
03/04clinics
– onward 03/04 onward
Province code (location of hospital)
The province or territory of patient hospitalization
91/92 – onward 91/92 onward
Resident indicator
Denotes whether the patient is a British Columbia (BC)
resident or from out of province
Province issuing Health Care Number (HCN)
Denotes the province (or territory) issuing the patient
01/02 –HCN
onward 91/92 onward
Responsibility for payment
Indicates the party responsible for a patient's
hospitalization payment (coding changes in 2001/02)
Third party liability form
Indicates when a third party liability form (HIA-14) has been
prepared for the recovery of health care costs by the
Ministry of Health (e.g., from ICBC). Coding changes over
the years (mostly used as a flag).
Level of care
Indicates the level of care provided to the patient (e.g.,
Acute Care, Day Surgery)
Admission date
The date that the patient was formally admitted as a patient
to the facility
Admission time – Research rationale describing why
this field is required must be supplied before it will
be considered for release:
The time of day the patient was admitted to the facility
(hour only up to 2000/01, from 2001/02 onwards complete
time is available)
Page 1 of 11
90/91-00/01
85/86-89/90
91/92 onward
Automation Version: 2012.v2
Checklist Version: 2015/09/17
APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
DISCHARGE ABSTRACT DATABASE (HOSPITAL SEPARATIONS) DATA FILE CHECKLIST
Admission category
Indicates the urgency of admission (e.g., elective,
emergency). Coding of this field changes in 2001/02.
Entry code
Indicates the patient’s type or mode of entry to a 90/91
facilityonward 90/91-
Readmission code
Denotes a readmission to the acute care unit of the
01/02
same
onward 01/02onward
reporting facility. The focus of the field is whether the
readmission was unplanned.
Emergency department registration date
Indicates the calendar date that the patient was registered
in the Emergency Department
10/11 onward
Emergency department registration time – Research
rationale describing why this field is required must
be supplied before it will be considered for release:
Indicates the time that the patient was registered in the
Emergency Department
10/11 onward
Ambulance code
The type of ambulance that brought a patient to hospital
99/00 onwar 90/00-00/01
Ambulance flag
A flag that indicates if a patient arrived by ambulance. Note
that from 01/02 onward, this field contains type of
ambulance (see previous field).
onward
91/92onward
Admission transfer codes
BC hospital number transferred from – Replaced by
project-specific identification number
OR
BC hospital number transferred from (unencrypted) –
Research rationale describing why this field is
required must be supplied before it will be
considered for release:
Identifies the hospital a patient was transferred from when
they required further treatment
Level of care transferred from
Indicates the level of care a patient was transferred from,
based on Canadian Institute for Health Information (CIHI)
codes
BC care level transferred from
BC transfer level codes indicating the care level transferred
01/02 - onward 01/02 onward
from
85/06-00/01
Discharge Related
Discharge (separation) date
The date that the patient was discharged (separated) from
the hospital or facility
Discharge (separation) time – Research rationale
describing why this field is required must be
supplied before it will be considered for release:
The time of day the patient was discharged from the facility
(hour only up to 2000/01, from 2001/02 onwards complete
time is available)
Left Emergency Room (ER) date
Indicates the date the patient was discharged from01/02
the onward 11/12 onward
Emergency Room (ER) to an inpatient unit
Left Emergency Room (ER) time
Indicates the time the patient was discharged from01/02
the ER
onward 11/12 onward
to an inpatient unit
Exit and Death codes
Discharge (separation) disposition
Page 2 of 12
The status of the patient upon leaving the hospital01/02 onward 01/02 onward
(includes death status)
APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
DISCHARGE ABSTRACT DATABASE (HOSPITAL SEPARATIONS) DATA FILE CHECKLIST
Exit code
Indicates the type of discharge from the hospital
Death code
Indicates circumstances of patient death. Replaced
85/86
from– 90/91
91/92 by the 4 codes below: autopsy flag, coroner flag,
death in OR flag and supplemental death code.
85/86-90/91
Autopsy
A flag to indicate if an autopsy was performed
Coroner
Indicates if a coroner/medical examiner was involved
91/92 – 00/01
following a patient death
91/92-00/01
Death in Operating Room (OR) indicator
A flag to indicate the patient death occurred in an operating
room/intervention location or during recovery in the postanesthetic recovery room (coding changes 00/01 on)
Supplemental death code
Identifies type of patient death, other than an operative
91/92 – 00/01 91/92-00/01
death
Death in Special Care Unit (SCU) indicator
A flag to indicate death in a Special Care Unit
85/86-00/01
91/92 – 00/01 91/92-00/01
91/92-00/01
01/02 onward 01/02 onward
Discharge transfer codes
BC hospital number transferred to – Replaced by
project-specific identification number
OR
BC hospital number transferred to (unencrypted) –
Research rationale describing why this field is
required must be supplied before it will be
considered for release:
Identifies the hospital a patient was transferred to when
they required further treatment
Level of care transferred to
Indicates the level of care a patient was transferred from,
based on Canadian Institute for Health Information (CIHI)
codes
BC care level transferred to
01/02 onward
BC transfer level codes indicating the level of care a 01/02
patient
- onward
was transferred to
Long Term Care (LTC) assessment code
85/86-95/96
Indicates the last level of LTC assessment for patients85/86 – 95/96
occupying acute care beds
Long term care assessment for Discharge Planning
Unit (DPU) code
85/86-95/96
Indicates the last level of LTC assessment for DPU
patients only
85/86 – 95/96
Ventilated on discharge flag
09/10-12/13
Indicates that patient was ventilated on discharge from
09/10
the- onward
reporting facility
85/86-00/01
Length of Stay Indicators
Total length of stay
The total number of days the patient was hospitalized
85/86
from– 06/07
admission to discharge
90/91 onward
Length of stay (group 1)
90/91-06/07
Groups of the total number of days from admission to85/86 – 06/07
discharge into 21 divisions
Length of stay (group 2)
90/91-06/07
Groups of the total number of days from admission to85/86 – 06/07
discharge into 12 divisions
Stay by level of care / services
Alternate Level of Care (ALC) days
Page 3 of 12
The number of ALC days. An ALC patient is one who has
finished the acute care phase of treatment but remains in
95/96 onward
95/96 - onward
an acute care bed waiting placement in an extended care
unit, nursing home, home care program, etc.
APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
DISCHARGE ABSTRACT DATABASE (HOSPITAL SEPARATIONS) DATA FILE CHECKLIST
Acute/rehab days
91/92 onward
The number of days spent in Acute and Rehab levels91/92
only- onward
Rehabilitation days
The number of days a patient spent in the rehabilitation
care unit in an Acute Care Hospital
Service transfer days [1-3]
The number of days associated with a patient service
which is not determined to be the main patient service
90/91 onward
Identifies services, in addition to the main patient service
(service most responsible for the care of the patient), that
the patient received as part of his/her hospital stay
90/91 onward
In-hospital service transfers [1-3]
85/86 onward
(except
1990)
Stay by hospital unit type
Intensive Care Unit Days captures the total number of days spent in all Special Care Units during a hospital stay. The
subsequent ICU days fields refer to stays in specific units (e.g., Medical ICU days). For stays relating to births, see the
Newborn/Maternal data field section.
Intensive Care Unit (ICU) days
Special Care Unit (SCU) days [1-6]
The total number of days spent in all Special Care Units
(SCU) during the patients hospital stay
85/86 onward
The number of days spent in each Special Care Unit (up to
6 units). Note: These fields do not capture which SCU.
01/02 onward
Undefined ICU days
Captures all unknown Special Care Unit days so that the
total of all Special Care Unit days equals total ICU days
01/02 onward
Medical ICU days
The number of days spent in a Medical Intensive Care
Nursing Unit
01/02 onward
Surgical ICU days
The number of days spent in a Surgical Intensive Care
Nursing Unit
01/02 onward
Combined Medical/Surgical ICU days
The number of days spent in combined Medical/Surgical
Intensive Care Nursing Unit
01/02 onward
Neurosurgery ICU days
The number of days spent in a Neurosurgery
Intensive Care Nursing Unit
01/02 onward
Paediatric ICU days
The number of days spent in a Pediatric Intensive Care
Nursing Unit
01/02 onward
The number of days spent in Respirology Intensive Care
Nursing Unit
01/02-02/03
Respirology ICU days
Burn ICU days
The number of days spent in a Burn Intensive Care 01/02 - onward
Nursing Unit
02/03 onward
Cardiac ICU days
The number of days spent in a Cardiac Intensive Care
01/02 - onward
Nursing Unit
01/02 onward
Trauma ICU days
The number of days spent in the Trauma Intensive Care
Nursing Unit
01/02 onward
Coronary Care Unit days
The number of days spent in the Coronary Intensive Care
Nursing Unit
Step-down Medical Unit days
The number of days spent in the Step-Down Medical Unit
01/02 onward
Step-down Surgical Unit days
The number of days spent in the Step-Down Surgical Unit
01/02 onward
Combined Medical/Surgical Step Down Unit days
The number of days spent in the Combined
Medical/Surgical Step Down Unit
09/10 onward
The number of days associated with a CBD Unit
85/86-00/01
Chronic Behaviour Disorder (CBD) Unit days
Page 4 of 12
APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
DISCHARGE ABSTRACT DATABASE (HOSPITAL SEPARATIONS) DATA FILE CHECKLIST
Discharge Planning Unit (DPU) days
The number of days the patient spent in the DPU unit
85/86-94/95
Patient Diagnosis
Diagnosis coding was done using ICD-9-CA codes until fiscal 2000/2001. From fiscal 2001/2002 onwards, diagnosis was coded
using ICD-10-CA codes. There is a cross-over period in 2001/2002 with a small percentage of records still being coded using ICD9-CA (and a fractional number in 2002/2003). The ‘Coding Classification Indicator’ field below indicates which system was used
for the coding.
Diagnosis type [max of 16 for 91/92 – 00/01; 25 for
01/02 onward]
A code which determines the relationship of the Diagnosis
to the patient's hospitalization
max of 16 in 85/86 – 00/01; 25 in 01/02 onward
Coding classification indicator
A code which identifies the classification system used for
recording diagnoses and procedures
01/02
Diagnosis code (ICD-10-CA) [1-25]
Indicates patient diagnosis, based on ICD-10-CA coding.
Note: must be used with diagnosis type, above.
01/02 onward
Diagnosis cluster [1-25]
Uses alphabetic characters to associate two or more
diagnoses codes
2009/2010
Diagnostic Short Codes
A diagnostic grouping system based on the primary ICD10-CA diagnostic code
01/02 onward
Injury code (ICD-10-CA; S00 to T98)
Identifies the first ICD-10-CA injury code on a record (if
applicable) in the range S00 to T98
01/02 onward
First ICD-10-CA E-Code (cause of injury)
The first occurrence of an ICD-10-CA Diagnostic Code that
is an E-code (i.e., indicating a cause of injury)
01/02 onward
Place of injury
The first occurrence of an ICD-10-CA diagnostic code
indicating a place of injury
01/02 onward
ICD-10-CA diagnosis coding
ICD-9-CA diagnosis coding
Note: From 2001/02, barring a few exceptions indicated by the ‘Coding Classification indicator’ above, coding was done using
ICD-10-CA coding. The fields for ICD-9-CA codes were converted back from the ICD-10-CA codes from 2001/02 until 2006/2007.
Diagnosis code (ICD-9) [1-16 fields for 91/92 –
00/01; 1-25 for 01/02-06/07]
91/92 –
Indicates patient diagnosis, based on ICD-9 coding. Note:
06/07
must be used with diagnosis
maxtype,
16 in above
85/86 – 00/01; 25 in 01/02 – 06/07
Diagnosis class codes
Groups principal diagnoses (ICD-9) into broad subcategories
Diagnostic Short List (DSL) codes
90/91 –
A diagnostic grouping system based on the primary ICD-9
90/91 – 06/07
06/07
diagnostic code
Pre-admit co-morbidity (diagnosis 2)
90/91 –
Indicates a condition arising at the beginning of the 85/86 – 06/07
06/07
hospital's observation and/or treatment which influences
the patient's length of stay and/or significantly influences
the management/treatment of the patient while in hospital
Injury code (ICD-9; 800-999)
Identifies the first ICD-9 injury code on a record (if
applicable) in the range 800-999
First ICD-9 E-code (cause of injury)
91/92 –
The first occurrence of an ICD-9 Diagnostic Code that85/86
is an– 06/07
06/07
E-code (i.e., indicating a cause of injury)
Second ICD-9 E-code (cause of injury)
91/92 –
The second occurrence of an ICD-9 Diagnostic Code 85/86
that – 00/01
00/01
is an E-code (i.e., indicating a cause of injury)
Page 5 of 12
91/92 –
06/07
91/92 –
85/86 – 06/07
06/07
APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
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Patient Service Data
Procedure coding was done using Canadian Classification of Diagnostic, Therapeutic and Surgical Procedures (CCP) codes until
fiscal 2000/2001. From fiscal 2001/2002 onwards, procedures were coded using Canadian Classification of Health (CCI) codes
and referred to as ‘interventions’. There is a cross-over period in 2001/2002 with a small percentage of records still being coded
using CCP (and a fractional number in 2002/2003). The ‘Coding Classification Indicator’ above (under patient diagnosis) indicates
which system was used for the coding.
Procedure or intervention dates and times
Procedure on admission day flag
An intervention (not necessarily surgery) was performed on
the day of admission
91/92 onward
Procedure/intervention date [max of 12 fields for
85/86-00/01; 20 for 01/02 -08/09]
The date on which the corresponding procedure or
intervention was performed on the patient. Note: replaced
by the fields below in 09/10.
Up to 08/09
Intervention episode start date [1-20]
The date on which the intervention episode was begun
09/10 onward
Intervention episode start time [1-20]
The time at which the intervention episode was begun
09/10 onward
Intervention episode end date [1-20]
The date on which the intervention episode ended
09/10 onward
Intervention episode end time [1-20]
The time at which the intervention episode ended
09/10 onward
Intervention episode duration [1-20]
Length of time, in minutes, that it took to perform the
associated intervention episode.
09/10 onward
Intervention codes (CCI) [1-20]
Indicate interventions that are performed during the
patient's stay
01/02 onward
Anaesthetic code [1-20]
Indicates the type of anaesthesia used during an
intervention
01/02 onward
Intervention status attribute (CCI) [1-20]
Denotes the circumstances under which the intervention
was performed (e.g., revision, abandoned after onset,
delayed, staged, initial, routine)
01/02 onward
Intervention location attribute (CCI) [1-20]
The anatomical location or laterality (e.g., right, left) of the
intervention
01/02 onward
Intervention extent attribute (CCI) [1-20]
The quantitative measure related to the interventions
01/02 onward
Intervention Short List
Groupings based on primary CCI codes
01/02 onward
Intervention began pre-admission flag [1-20]
Indicates if the intervention was started prior to admission
09/10 onward
Intervention unplanned return to OR flag [1-20]
Patient returned to OR for an unexpected subsequent
intervention during the current hospitalization
01/02 onward
Out of Hospital (OOH) intervention flag [1-20]
Indicates whether the associated intervention was
performed Out-Of-Hospital
10/11 onward
Out of Hospital (OOH) intervention [1-20]
Intervention (CCI) codes for OOH interventions
01/02 onward
Out of Hospital (OOH) intervention Institution [1-20]
Facility number where the OOH intervention was
performed
01/02 onward
Surgical case flag
A flag to indicate surgical cases
01/02 onward
Intervention related (using CCI codes)
Page 6 of 12
APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
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Procedure related (CCP Codes)
Note: Until 2000/2001 all procedure coding was done using CCP coding From 2001/2002, barring a few exceptions indicated by
the ‘Code Classification Indicator’ above, procedure coding was done using CCI coding The CPP codes were created by
converting back from the CCI codes from 2001/02 until 2006/2007
Procedure codes (CPP)
[max of 12 fields for 85/86-00/01; 20 for 01/02 06/07]
Indicate operative or non-operative procedures performed
during the patient's hospital stay
90/91-06/07
Anaesthetic code [1-12]
Indicates the type of anaesthesia used during a procedure
85/86-00/01
Operation group 1
A grouping based on the first procedure code (CCP)
90/91-06/07
Operation group 2
A grouping based on the second procedure code (CCP)
90/91-06/07
Operation group 3
A grouping based on the third procedure code (CCP)
90/91-06/07
Procedure Short List
A grouping based on CCP codes (replaced by Intervention
Short List above which uses CCI coding)
91/92-06/07
Converted Out of Hospital intervention [1-20]
CCP Code converted from ‘OOH Intervention’ above
01/02-06/07
Provider 1 (most responsible provider)
Replaced by project-specific identification
number
Provider (fee-for-service physician, surgeon, dentist, oral
surgeon, midwife or nurse practitioner) who was most
responsible for the patient's care during hospitalization
01/02 onward
Provider 1 (most responsible provider) service
Code identifying the specialty or service of the most
responsible provider based on the Provider Service Code
list provided by CIHI. Note: not the same as registered
specialty.
90/91 onward
Intervention provider
Replaced by project-specific identification
number
Identifies the provider associated with an
intervention/procedure
Intervention provider’s service
01/02 onward
Indicates the level max
of training
of 12 inor85/86
the specialty
– 89/90; 10ofinthe
90/91
health
– 00/01; and
care provider associated with an intervention 20 in 01/02 onward
Intervention (procedure) anaesthetist
Replaced by project-specific identification
number
Identifies the anaesthetist associated with the performed
20 in 01/02 onward
procedure/intervention
Service provider related
20 in 01/02 onward
Patient treatment related
Main patient service
Service most responsible for the care of the patient
Patient service group
Grouping based on combination of the main patient
service, patient’s age in years and the first procedure
90/91-00/01
Operative / non-operative code
This code indicates if a record contains single/multiple
diagnosis with or without operative procedures
99/00-00/01
Occupational therapy
A flag to indicate whether the patient received occupational
therapy
85/86-00/01
Physiotherapy
A flag to indicate whether the patient received
physiotherapy
85/86-00/01
Speech therapy
A flag to indicate whether the patient received speech
therapy
99/00-00/01
Page 7 of 12
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Respiratory therapy
A flag to indicate whether the patient received
respiratory therapy
Ventilated hours
Total number of ventilated hours
Ventilation indicator
09/10 onward
Indicates when ventilated hours calculation may be 09/10 - onward
incomplete
Tertiary code 1
Indicates a specialized and complex service carried out in
a hospital authorized to provide this service
93/94-00/01
Tertiary code 2
Indicates a tertiary service was carried out in a hospital
which has not been officially authorized to have a tertiary
unit yet is providing tertiary services
93/94-00/01
99/00-00/01
09/10 onward
09/10 - onward
Canadian Institute for Health Information (CIHI) Case Mix Groups (CMG)
In 2001/2002, coding in ICD-10-CA/CCI was initiated in BC. Since ICD-9/CCP and ICD-10-CA/CCI cannot be fully translated, a
different mix of cases may be represented within each CMG before and after the switch to ICD-10-CA/CCI.
CIHI CMG with Complexity Grouper Variables/Day Procedure Groups
CIHI CMG methodologies categorize patients into statistically and clinically homogeneous groups based on the collection of
clinical and administrative data. These are based on the ICD-9 coding system and apply to records from 1991/92 to 200/01.
CIHI Case Mix Group (CMG)
91/92-00/01
Categorizes a group of ICD-9 codes or diagnoses that91/92 – 00/01
have an anticipated similar clinical course and resource
requirements
CIHI Major Clinical Category (MCC)
91/92-00/01
This field is based on a list of major clinical categories91/92 – 00/01
relating to particular systems in the body. It is assigned on
the basis of the Most Responsible Diagnosis.
CIHI CMG age category
91/92-00/01
CIHI age grouping Age can be a factor in assigning 91/92 – 00/01
complexity values
CIHI CMG complexity grade list indicator
91/92-00/01
This code determines the grade list used and is based91/92
on – 00/01
the CMG
CIHI CMG complexity/co-morbidity level
The complexity level based on the CIHI CMG
CIHI Expected Length of Stay (ELOS)
91/92-00/01
ELOS is the expected acute length of stay in hospital 91/92
for – 00/01
patients with the same CMG, age category, comorbidity
level and intervention factors
CIHI Resource Intensity Weighting (RIW) value
91/92-00/01
A CMG inpatient weighting value assigned to estimate91/92
the – 00/01
relative cost of resources used to pay for a patient's care
during their hospital stay
CIHI Resource Intensity Weighting (RIW) exclusion
indicator/atypical code
This code indicates the status of the RIW assignment
91/92-00/01
91/92 – 00/01
CIHI Day Procedure Group (DPG)
A classification system for day surgeries.
91/92-00/01
91/92 – 00/01
CIHI Day Procedure Group (DPG) weight
91/92-00/01
The weighting value assigned to a day surgery record91/92
by – 00/01
the CIHI grouping methodology
CIHI Procedure Used for CMG Assignment
Code which identifies the procedure, if any, that was used
to determine the CMG assignment
Page 8 of 12
91/92-00/01
91/92 – 00/01
99/00-00/01
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CIHI CMG Plus (CMG+) Grouper Variables
CMG Plus is a refinement in the Case Mix Groups methodology and aggregates acute care inpatients with similar clinical and
resource utilization characteristics. It is based on the ICD-10-CA coding system and applies to records from 2001/2002 onwards.
Each year CIHI uses a new methodology for creating these grouper variables. This methodology is then applied to the current
year as well as historical years of data. The methodology is usually named by the year it is created for (e.g., 2008 methodology).
Methodology year
01/02 onward
This field represents the year for which the CIHI CMG01/02
Plus – onward
grouping methodology was developed
Major Clinical Category (MCC+)
01/02 onward
This field is based on a list of major clinical categories01/02 – onward
relating to particular systems in the body. It is assigned on
the basis of the Most Responsible Diagnosis.
Case Mix Group (CMG+)
01/02 onward
Categorizes a group of ICD-10-CA codes or diagnoses
01/02
that– onward
have an anticipated similar clinical course and resource
requirements
CMG+ return code
01/02 onward
Return code from the CIHI CMG Complexity grouper for
01/02 – onward
the CMGs
MCC partition
01/02 onward
Partitions MCCs into intervention or diagnosis CMGs 01/02 – onward
Co-morbidity level
01/02 onward
The co-morbidity level based upon cumulative cost impact
01/02 – onward
of comorbidities on the patient stay
CMG+ age category
01/02 onward
CIHI age grouping Age can be a factor in assigning 01/02 – onward
complexity values
Flagged intervention count
Indicates the number of flagged interventions
01/02 onward
01/02 – onward
Intervention event count
Indicates there was an intervention event
01/02 onward
01/02 – onward
Intervention OOH count
Indicates there was an OOH intervention
06/07 onward
01/02 – onward
CMG+ intervention
01/02 onward
The assigned CCI intervention code, if any, that was used
01/02 – onward
to determine the CMG assignment
CMG+ intervention status
01/02 onward
The CCI intervention status attribute assigned to the 01/02 – onward
corresponding intervention
CMG+ intervention location
01/02 onward
The CCI intervention location attribute assigned to the01/02 – onward
corresponding intervention
CMG+ intervention extent
01/02 only
The CCI intervention extent attribute assigned to the 01/02 – onward
corresponding intervention
CMG+ intervention episode
01/02 onward
The episode number of the intervention used to determine
01/02 – onward
the CMG assignment
Diagnosis used for CMG+ assignment
01/02 onward
The ICD-10-CA diagnosis code, if any, used for the CMG
01/02 – onward
assignment
Inpatient Resource Intensity Weight (RIW)
01/02 onward
A CMG inpatient weighting value assigned to estimate01/02
the – onward
relative cost of resources used to pay for a patient's care
during their hospital stay
Expected Length of Stay (ELOS) days
01/02 onward
ELOS is the average acute length of stay in hospital for
01/02 – onward
patients with the same CMG, age category, comorbidity
level and intervention factors
Inpatient RIW atypical code
01/02 onward
Identifies atypical cases that do not receive the normal01/02
or – onward
predicted course of treatment associated with inpatients in
a specific CMG
Page 9 of 12
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Inpatient Resource Intensity Level
01/02 onward
Groups Resource Intensity Factors into levels to indicate
01/02 – onward
the overall effect of all factors on a particular case
DPG RIW
DPG weighting value assigned to day surgery cases
01/02 onward
Co-morbidity Total Factor
The cumulative percentage increase on patient cost
associated with all co-morbidity codes for a particular case
01/02 onward
Inpatient Resource Intensity Total Factor
The measure of the effect of factors on the RIW of a case.
The ratio of the RIW value calculated for a particular case
and the RIW value for a Nonfactor case in the same CMG
and Age Group.
01/02 onward
Trim Days
Flagged Intervention Trim Days
01/02 onward
Biopsy flag
A flag to indicate biopsy intervention
04/05 onward
Cardioversion flag
A flag to indicate Cardioversion intervention
01/02 onward
01/02 – onward
Cell saver flag
A flag to indicate cell saver intervention
01/02 onward
01/02 – onward
Chemotherapy flag
A flag to indicate chemotherapy intervention
01/02 onward
Dialysis flag
A flag to indicate dialysis intervention
01/02 onward
Endoscopy flag
A flag to indicate endoscopy intervention
04/05 onward
Feeding tube flag
A flag to indicate feeding tube intervention
01/02 onward
01/02 – onward
Heart resuscitation flag
A flag to indicate heart resuscitation intervention
01/02 onward
01/02 – onward
Mechanical ventilation greater than or equal to 96
hours flag
A flag to indicate mechanical ventilation intervention
01/02 onward
(greater than or equal to 96 hours)
01/02 – onward
Mechanical ventilation less than 96 hours flag
Parenteral nutrition flag
A flag to indicate mechanical ventilation intervention01/02
(less – onward
01/02 onward
than or equal to 96 hours)
A flag to indicate parenteral nutrition intervention 01/02 – onward
01/02 onward
Paracentesis flag
A flag to indicate paracentesis intervention
01/02 onward
Pleurocentesis flag
A flag to indicate pleurocentesis intervention
01/02 onward
Pre-delivery days flag
A flag to indicate pre-delivery days intervention
04/05 onward
Radiotherapy flag
A flag to indicate radiotherapy intervention
01/02 onward
Tracheostomy flag
A flag to indicate tracheostomy intervention
01/02 onward
Vascular access device flag
A flag to indicate vascular access device intervention
01/02 onward
CMG+ flagged intervention fields
CIHI Day Procedure Group Plus (DPG+) codes
Day Procedure Group (DPG) is a national classification system for ambulatory hospital patients that focuses on the area of day
surgery. Note that 2010 was the final year for DPG. As of 2011–2012, all ambulatory care is grouped using CACS (see below).
Day Procedure Group (DPG+ )
A procedure/intervention-based ambulatory classification
system. Assigns (mostly) day surgery cases according to
the principal (most significant) procedure/intervention
recorded on the patient abstract.
01/02-10/11
DPG+ grouper return code
Indicates whether DPG grouping was successful
01/02-10/11
DPG+ RIW
The weighting value assigned to a day surgery case
01/02-10/11
DPG+ assigned intervention
The CCI intervention code, if any, that was used to
04/05-10/11
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determine the DPG assignment
DPG+ intervention location
The CCI location attribute assigned to the corresponding
intervention
04/05-10/11
DPG+ assigned anaesthetic technique
The anesthetic technique, if any, that was used in the
intervention to determine the DPG assignment
04/05-10/11
CIHI Comprehensive Ambulatory Care Classification System (CACS)
CACS is a national grouping methodology for ambulatory care patient data. It was started in 2006/2007.
CACS age category
CIHI age grouping
06/07 onward
CACS assigned intervention
The CCI intervention code, if any, that was used to
determine the CACS code assignment
06/07 onward
CACS intervention location
The CCI location attribute assigned to the corresponding
intervention
06/07 onward
CACS assigned anaesthetic technique
The anesthetic technique, if any, in the intervention that
was used to determine the CACS assignment
06/07 onward
CACS code
Indicates the Comprehensive Ambulatory Care
Classification System (CACS) code
06/07 onward
CACS investigative technology count
Total count of investigative technologies used to derive
CACS codes
06/07 onward
CACS Major Ambulatory Cluster (MAC)
Indicates CACS Major Ambulatory Cluster codes
06/07 onward
CACS partition
A sub-division (i.e., diagnosis or intervention partitions) of
the Major Ambulatory Cluster
06/07 onward
CACS Resource Intensity Weight (RIW)
Indicates the ambulatory weighting value assigned to the
case
06/07 onward
Newborn/Maternal Data
This section contains data related to births in BC hospitals. In the case of an adoption the mother would be the birth mother.
Babies born out of province or at home are not included here.
Infant birth weight
The weight of the infant in grams (newborns and neonates
only)
85/86 onward
Gestational age
The number of weeks of gestation for a newborn. This field
was replaced with the 3 fields below in 07/08.
94/95-06/07
Clinical gestational weeks at admission
Clinical gestation weeks upon admission. Not applicable for
newborns and neonates cases
07/08 onward
Clinical gestational weeks at delivery
Clinical gestation weeks at delivery. Applicable to delivered
and newborn cases only.
07/08 onward
Clinical gestational weeks at discharge
Clinical gestation weeks at discharge. Not applicable for
delivered, TA, newborns and neonates cases.
07/08 onward
Neonatal Intensive Care Nursing Unit (NICU) days
The number of days spent in the Neonatal Intensive Care
Nursing Unit
01/02 onward
Neonatal Intensive Care Nursing Unit (NICU) Level
1 days
The number of days spent in a Level 1 NICU
11/12 onward
Neonatal Intensive Care Nursing Unit (NICU) Level
2 days
The number of days spent in a Level 2 NICU
93/94 onward
Neonatal Intensive Care Nursing Unit (NICU) Level
The number of days spent in a Level 3 NICU
93/94 onward
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APPLICATION FOR DATA FOR RESEARCH PURPOSES FROM POPULATION DATA BC
DISCHARGE ABSTRACT DATABASE (HOSPITAL SEPARATIONS) DATA FILE CHECKLIST
3 days
Mother listed on newborn record
Replaced by project-specific identification
number
A number used to identify the mother on a newborn's 97/98 onward
(under age 1) record
Mental Health (MH) Involuntary Admissions
These fields are flags indicating that the patient has been admitted involuntarily based on mental health issues. The flags
indicate which forms were used to admit the patient. See https://wwwhealthgovbcca/exforms/mhhtml for current mental health
act forms including involuntary admission forms
MH involuntary admission flag
This flag is set if any of MH project fields 1-5, below are set
01/02 onward
MH Project field 1 flag
MH involuntary admission form 4 is on the patient’s record
01/02 onward
MH Project field 2 flag
Patient was apprehended and admitted by police
01/02 onward
MH Project field 3 flag
MH involuntary admission form 21 (recalled from extended
leave) is on the patient’s record
01/02 onward
MH Project field 4 flag
MH involuntary admission form 10 (warrant) is on the
patient’s record
01/02 onward
MH Project field 5 flag
MH involuntary admission form 20 (placed on extended
leave) is on the patient’s record
01/02 onward
MH Project field 6 flag
MH involuntary admission form 37 is on the patient’s record
01/02-06/07
MH Project field 7 flag
MH involuntary admission form 42 is on the patient’s record
01/02-06/07
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