This field, which is derived from the patient's postcode in the field HOMEADD, contains a code which defines the Ordnance survey postcode grid reference of the patient's residence. The Gridlink field in HES is only available to the NHS. Access to it requires the approval of The Independent Group Advising on the Release of Data (IGARD).|This field indicates the health authority (HA) where the treatment took place. It is derived from the hospital provider code (procode). In 2002 following a reorganisation of health areas, Health Authorities were replaced by Strategic Health Authorities. This field has continued to be derived after this date as a ‚Äö√Ñ√≤frozen‚Äö√Ñô geography.|Provides the Strategic Health Authority (SHA) area in which the patient‚Äö√Ñôs GP is registered. In 2013 following a reorganisation of health areas, Strategic Health Authorities were abolished. This field has continued to be derived after this date as a 'frozen' geography.

hatreat