Mapped data fields

The following data fields from health records are not standardised across England, Scotland and Wales. These were mapped into a single unified field for which a new UK Biobank coding system was derived. Full details are given in Table 1 and the subsequent mapping tables below (use the links in Table 1 to navigate to the field and table of interest).

Note that data fields from health records which are standardised across England, Scotland and Wales were mapped without modification. These include clinical codes (ICD-9, ICD-10, OPCS-3 and OPCS-4), dates of admission to and discharge from hospital, and length of hospital stay in days.

Table 1: Non-standardised data items mapped between England, Scotland and Wales
Description UK Biobank Showcase Field ID UK Biobank Encoding Jump to Section
Detention Categories 41150 155 Go to 155
History of psychiatric care on admission 41151 156 Go to 156
Methods of admission to hospital 41249 264 Go to 264
Sources of admission to hospital 41251 265 Go to 265
Patient classification on admission 41247 266 Go to 266
Destinations on discharge from hospital 41248 267 Go to 267
Methods of discharge from hospital 41250 268 Go to 268
Treatment specialty of consultant 41246 269 Go to 269
Main specialty of consultant 41245 270 Go to 270
Intended management of patient 41244 271 Go to 271


Data mappings for Encoding 155: Detention categories

Data mappings for Encoding 156: History of psychiatric care on admission

Data mappings for Encoding 264: Methods of admission to hospital

Data mappings for Encoding 265: Sources of admission to hospital

Data mappings for Encoding 266: Patient classification on admission

Data mappings for Encoding 267: Destinations on discharge from hospital

Data mappings for Encoding 268: Methods of discharge from hospital

Data mappings for Encoding 269: Treatment specialty of consultant

Data mappings for Encoding 270: Main specialty of consultant

Data mappings for Encoding 271: Intended management of patient