Data Collection Definitions

NSIH Denominators (NSIH-Denominators)

  • from 01/01/2026 - 31/12/2026
  • Status: active
  • Unique ID: Data collection month and campus number
  • How to create a CSV file for this data collection?
  • Start date: 05/02/2026
  • End date creation: 30/12/2028
  • End date submission: 30/12/2028
  • End date comments: 30/12/2028
Full viewCSV column namesValidation rulesReference listsComputed expressionsAdditional informationCSV extract

1 Hospital level

choice

Data collection month

Technical specs

CSV column name:

data_collection_month

Required:

true

Options
LabelValue
January1
February2
March3
April4
May5
June6
July7
August8
September9
October10
November11
December12
text

NIHDI-code of the data provider institution

Not to be included in the CSV.

Technical specs

CSV column name:

installation_id

Length:

100

Computed:

Required:

false

Read only

text

Campus number

Help

If you have communicated you do not longer wish to register per campus, then only the main campus is automatically listed here. If you still register per campus, you have to select the correct campus from the drop-down list. If you want to stop registering per campus, please create a Service Now ticket for healthdata support: https://sciensano.service-now.com/sp

Technical specs

CSV column name:

site_number

Length:

100

Reference list:

SITE

Required:

true

number

Number of admissions

Help

Each stay includes at least 1 night in the hospital with occupancy of a hospital bed. These patients are always hospitalised patients, never ambulatory patients or day hospitalisations.

Technical specs

CSV column name:

den_admis

Length:

10,5

Required:

true

Validation
  • Number of admissions is greater than number of patient days (error)
  • Number of admissions should be an integer value (error)
  • Number of admissions cannot contain more than 5 digits (error)
  • cannot be negative (error)
number

Number of patient days

Help

The total number of days a hospital bed was used by a hospitalised patient. These patients are always hospitalised patients, never ambulatory patients or day hospitalisations.

Technical specs

CSV column name:

den_nights

Length:

10,5

Required:

true

Validation
  • Number of admissions is greater than number of patient days (error)
  • Number of patient days should be an integer value (error)
  • Number of patient days cannot contain more than 5 digits (error)
  • cannot be negative (error)
number

Number of beds

Technical specs

CSV column name:

den_beds

Length:

10,5

Required:

true

Mapping of the clinical building blocks (indicative only)

Concept:

na

Data element:

na

Validation
  • Number of beds should be an integer value (error)
  • Number of beds cannot contain more than 4 digits (error)
  • cannot be negative (error)
number

Number of haemocultures from hospitalized patients

Help

Total number of hemocultures performed on hospitalized patients during the registration month: Number of tests billed to the NIHDI during the reporting period. Use code 549021 ‘Hemoculture with identification of isolated germs - hospitalized’. When collected from adults, a pair (aerobic bottle + anaerobic bottle) counts as one hemoculture.

Technical specs

CSV column name:

MS_HEMOCULT_HOSPI

Required:

false

Validation
  • Number of haemocultures taken in hospital should be an integer value (error)
  • Number of haemocultures taken in hospital cannot contain more than 4 digits. (error)
  • cannot be negative (error)
number

Number of days with central venous catheter (CVC) use in hospital

Help

For all patients hospitalized during the registration month, the number of patient days in which they had a CVC at any time and it was used. Ambulatory patients or patients in day hospitalisation are excluded.

Technical specs

CSV column name:

cvc_d

Length:

10,5

Required:

false

Validation
  • Number of CL days should be an integer value (error)
  • Number of CL days taken in hospital cannot contain more than 4 digits (error)
  • cannot be negative (error)
number

Number of days with peripheral venous catheter (PVC) use in hospital

Help

For all patients hospitalized during the registration month, the number of patient days in which they had a PVC at any time and it was used.

Technical specs

CSV column name:

MS_PVC_DAYS

Required:

false

Validation
  • Number of days with peripheral venous catheter use in hospital should be an integer value (error)
  • Number of days with peripheral venous catheter use in hospital cannot contain more than 4 digits (error)
  • cannot be negative (error)

2 Ward level

Section help

If there is no ICU ward available at your hospital, click on the bin below to remove this item.

2.1 Intensive care wards (ICU)

Section help

If the ward ID does not appear in the drop-down list (e.g. in case of reorganization or moving of wards or hospital) please take a look at the Healthdata docs page (https://docs.healthdata.be/documentation/national-hand-hygiene-campagne/how-update-your-hcos-internal-organization) where you can find information about how wards can be updated and where to find an overview file of current wards.

list

ICU ward

This is a container for multiple answers. See the reference documentation for more details. Below you can find the information about the fields of the container

Help

If there is no ICU ward available at your hospital, click on the bin below to remove this item.

Element conditions
MessageExpression
Number of admissions at ICU cannot be higher than number of patient days at ICUtypeof $.den_admis_icu === 'number' && typeof $.den_nights_icu === 'number'?$.den_admis_icu <= $.den_nights_icu:true
Number of admissions at ICU should be an integer valuetypeof $.den_admis_icu === 'number'?$.den_admis_icu%1===0:true
Number of patient days at ICU should be an integer valuetypeof $.den_nights_icu === 'number'?$.den_nights_icu%1===0:true
Number of CL days at ICU should be an integer valuetypeof $.cvc_d_icu === 'number'?$.cvc_d_icu%1===0:true
Number of admissions at ICU with peripheral venous catheter use in hospital cannot contain more than 4 digitstypeof $.den_admis_icu === 'number'?$.den_admis_icu.toString().length <=4:true
Number of CL days at ICU cannot contain more than 4 digitstypeof $.cvc_d_icu === 'number'?$.cvc_d_icu.toString().length <=4:true
Number of admissions at ICU for at least 3 days cannot contain more than 4 digitstypeof $.den_admis_icu_3 === 'number'?$.den_admis_icu_3.toString().length <=4:true
Number of admissions at ICU for at least 3 days should be an integer valuetypeof $.den_admis_icu_3 === 'number'?$.den_admis_icu_3%1===0:true
Number of patient days for patients staying at least 3 days cannot contain more than 4 digitstypeof $.den_nights_icu_3 === 'number'?$.den_nights_icu_3.toString().length <=4:true
Number of patient days for patients staying at least 3 days should be an integer valuetypeof $.den_nights_icu_3 === 'number'?$.den_nights_icu_3%1===0:true
Number of CL days for patients staying at least 3 days at ICU cannot contain more than 4 digitstypeof $.den_cl_icu_3 === 'number'?$.den_cl_icu_3.toString().length <=4:true
Number of CVC days for patients staying at least 3 days at ICU should be an integer valuetypeof $.den_cl_icu_3 === 'number'?$.den_cl_icu_3%1===0:true
Number of intubation days for patients staying at least 3 days at ICU cannot contain more than 4 digitstypeof $.den_intub_icu_3 === 'number'?$.den_intub_icu_3.toString().length <=4:true
Number of intubation days for patients staying at least 3 days at ICU should be an integer valuetypeof $.den_intub_icu_3 === 'number'?$.den_intub_icu_3%1===0:true
Number of patient days at ICU with peripheral venous catheter use in hospital cannot contain more than 4 digitstypeof $.den_nights_icu === 'number'?$.den_nights_icu.toString().length <=4:true
Number of days of PVC use in the ICU should be an integer valuetypeof $.MS_ICU_PVC_DAYS === 'number'?$.MS_ICU_PVC_DAYS%1===0:true
Number of days of PVC use in the ICU cannot contain more than 4 digitstypeof $.MS_ICU_PVC_DAYS === 'number'?$.MS_ICU_PVC_DAYS.toString().length <=4:true
List items
Section help

If there is no ICU ward available at your hospital, click on the bin below to remove this item.

text

ID of the ward

Help

If the ward ID does not appear in the drop-down list (e.g. in case of reorganization or moving of wards or hospital) please take a look at the Healthdata docs page (https://docs.healthdata.be/documentation/national-hand-hygiene-campagne/how-update-your-hcos-internal-organization) where you can find information about how wards can be updated and where to find an overview file of current wards.

Technical specs

CSV column name:

icu_ward|0|ward_id

Length:

100

Reference list:

WARD

Required:

true

text

Specialty of the ward

Help

If the specialty of ward does not appear in the drop-down list please create a Service Now ticket for healthdata support (https://sciensano.service-now.com/sp) to add this specialty.

Technical specs

CSV column name:

icu_ward|0|ward_type

Length:

100

Reference list:

SPECIALTY_DETAILED_ICU

Required:

true

number

Number of hospitalizations ICU

Help

Include direct admissions as well as internal transfers.

Technical specs

CSV column name:

icu_ward|0|den_admis_icu

Length:

10,5

Required:

true

Validation
  • cannot be negative. (error)
number

Number of patient days ICU

Help

The total number of days a hospital bed was used by a hospitalised patient. These patients are always hospitalised patients, never ambulatory patients or day hospitalisations.

Technical specs

CSV column name:

icu_ward|0|den_nights_icu

Length:

10,5

Required:

true

Validation
  • cannot be negative (error)
number

Number of days of CVC use in the ICU

Technical specs

CSV column name:

icu_ward|0|cvc_d_icu

Length:

10,5

Required:

false

Validation
  • cannot be negative (error)
number

Number of days of PVC use in the ICU

Technical specs

CSV column name:

icu_ward|0|MS_ICU_PVC_DAYS

Required:

false

Validation
  • cannot be negative (error)
number

Number of admissions at ICU for at least 3 days

Help

Only required in case of participation in the ICU surveillance.

Technical specs

CSV column name:

icu_ward|0|den_admis_icu_3

Length:

10,5

Required:

false

number

Number of patient days for patients staying at least 3 days

Help

Only required in case of participation in the ICU surveillance.

Technical specs

CSV column name:

icu_ward|0|den_nights_icu_3

Length:

10,5

Required:

false

number

Number of CVC days for patients staying at least 3 days at ICU

Help

Only required in case of participation in the ICU surveillance.

Technical specs

CSV column name:

icu_ward|0|den_cl_icu_3

Required:

false

number

Number of intubation days for patients staying at least 3 days at ICU

Help

Only required in case of participation in the ICU surveillance.

Technical specs

CSV column name:

icu_ward|0|den_intub_icu_3

Required:

false

2.2 Other wards (non-ICU)

list

Other ward

This is a container for multiple answers. See the reference documentation for more details. Below you can find the information about the fields of the container

Element conditions
MessageExpression
Number of admissions cannot be higher than number of patient daystypeof $.den_admis_w === 'number' && typeof $.den_nights_w === 'number'?$.den_admis_w <= $.den_nights_w:true
Number of admissions should be an integer valuetypeof $.den_admis_w === 'number'?$.den_admis_w%1===0:true
Number of patient days should be an integer valuetypeof $.den_nights_w === 'number'?$.den_nights_w%1===0:true
Number of admissions cannot contain more than 4 digitstypeof $.den_admis_w === 'number'?$.den_admis_w.toString().length <=4:true
Number of patient days cannot contain more than 4 digitstypeof $.den_nights_w === 'number'?$.den_nights_w.toString().length <=4:true
List items
text

ID of the ward

Help

If the ward ID does not appear in the drop-down list (e.g. in case of reorganization or moving of wards or hospital) please take a look at the Healthdata docs page (https://docs.healthdata.be/documentation/national-hand-hygiene-campagne/how-update-your-hcos-internal-organization) where you can find information about how wards can be updated and where to find an overview file of current wards.

Technical specs

CSV column name:

other_ward|0|ward_id

Length:

100

Reference list:

WARD

Required:

false

text

Specialty of the ward

Help

If the specialty of ward does not appear in the drop-down list please create a Service Now ticket for healthdata support (https://sciensano.service-now.com/sp) to add this specialty.

Technical specs

CSV column name:

other_ward|0|ward_type

Length:

100

Reference list:

SPECIALTY_DETAILED_NON_ICU

Required:

false

number

Number of admissions

Technical specs

CSV column name:

other_ward|0|den_admis_w

Length:

10,5

Required:

false

Mapping of the clinical building blocks (indicative only)

Concept:

na

Data element:

na

number

Number of patient days

Help

The total number of days a hospital bed was used by a hospitalised patient. These patients are always hospitalised patients, never ambulatory patients or day hospitalisations.

Technical specs

CSV column name:

other_ward|0|den_nights_w

Length:

10,5

Required:

false

Mapping of the clinical building blocks (indicative only)

Concept:

na

Data element:

na

Validation
  • cannot be negative (error)