NHS Scotland is spending up to £5m on software to manage address information.
NHS Scotland has advertised in the Official Journal of the European Union to procure a national licence and associated services for address management software.
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The system will be based on data provided by Scotland's National Gazetteer, which has been compiled by all 32 local councils in Scotland.
The system is expected to cost between £2m and £5m, and the final amount will cover software, consultancy and support.
It will link different administration systems in hospitals, with the aim of improving the accuracy of address information NHS Scotland holds on its sites, suppliers, pharmacies and other associated organisations.