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Primary Care Domain Reference Set Portal

The clusters of codes used within business rules, produced by the Primary Care Domain, are now displayed using reference set identifiers (refset IDs).

Primary Care Domain Reference Set Portal

Primary Care Domain reference sets (refsets) are clusters of codes used within the business rules authored and maintained by the Primary Care Domain.


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What you can find out from the portal

You can see which SNOMED codes are included within current Primary Care Domain refsets.

From the PCD refsets page, you can find out which refsets are used by which services/rulesets including the Quality and Outcomes Framework (QOF), enhanced services and others.

From the cluster outputs page, you can find out which refsets are used in any given output (indicator/count/register). Registers and cohorts (populations) are denoted by a ‘P’ in the Type column of the Description table; indicators and counts (outputs) are shown as ‘O’.

What the portal cannot tell you

Changes to refset content. Only the current content of each refset is displayed on the portal. See ‘Further resources and information’ below for more details on availability of historical refset content.

Drug reference sets content. Any drug refsets used by the business rules are not included in the code portal. The drug files can be located on the TRUD pages (details listed in the ‘Further resources and information’ section below).

More information about the portal

There can be a lag time between the Primary Care Domain releasing reference set content updates, and these being implemented by GP system suppliers for view on GP practice systems. This means the content shown in the code portal may not always be reflective of the content within GP systems.

The data displayed by the portal is also released in a .txt file (use the link at the top of this page to download).


This tool is in Microsoft PowerBI which does not fully support all accessibility needs. If you need further assistance, please contact us for help.

Further resources and information

If you plan to use the .txt files, please read the ‘Guide to using the txt file’ published in the zip folder to ensure the SNOMED codes, descriptions and refset IDs remain in the correct format. The zip file contains the three most recent files, if you require earlier files please complete the feedback form.

Primary Care Domain reference sets are published on TRUD.

The drug reference sets can also be located on TRUD.

There are regular updates to refset content. To stay informed as to when new files are out please sign up to receive notifications from the TRUD website.

Last edited: 26 February 2024 2:33 pm