---
title: What Is the dm+d?
description: The Dictionary of Medicines and Devices (dm+d) is a database that contains information about medicines and devices used in the UK. The dm+d is maintained by the National Health Service Business Servic
---
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# What Is the dm+d?
The **Dictionary of Medicines and Devices (dm+d)** is a database that contains information about medicines and devices used in the UK. The dm+d is maintained by the National Health Service Business Services Authority (NHSBSA).
The dm+d was previously known as the UK Clinical Product Reference Source (**UKCPRS**), the Primary Care Drug Dictionary (**PCDD**), the Secondary Care Drug Dictionary (**SCDD**) and the Medical Device Dictionary (**MDD**).
**These databases have now been combined into the dm+d.**
Every pack for every medicine or device from every manufacturer is given a unique code on the dm+d database. The dm+d not only includes the vast majority of medicines or devices that are currently available, but also those that have been discontinued, used in clinical trials or imported. Once a product or device has been added to the dm+d and a code assigned to it, it is never deleted and the code is never re-used.
The dm+d underpins many of the NHS national IT infrastructure initiatives including electronic prescribing and patient records, as well as improving the efficiency of prescription reimbursement.
**The dm+d database can be searched and viewed via emc med data at: [https://meddata.medicines.org.uk/](https://meddata.medicines.org.uk/)**
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