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Browse the EMIS code library and NHS PCD refset clusters, mapped to SNOMED using MKB --- and refset release ---.

A read-only browser for NHS clinical informatics and data quality teams, covering the full EMIS clinical code and medication libraries, SNOMED concept mappings, and the NHS Primary Care Domain (PCD) refset clusters used in QOF, IIF, and GDPPR business rules.

EMIS Code Library

Browse 1.6M EMIS clinical codes with SNOMED mappings. Search by term, Read2 code, or SNOMED concept ID and export code selections as EMIS XML or TPP SystmOne lists.

EMIS Medications

Search the EMIS medications library with drug group and ingredient filters. Cross-reference SNOMED drug concepts and export medication codes for clinical search definitions.

MKB Changelog

Track EMIS code additions, removals, and term changes between MKB versions. Export full change reports as XLSX with complete code detail.

Refset Changelog

Compare code additions and retirements between PCD releases across all clusters and programmes. Identify changes affecting your clinical search definitions.

Unavailable Codes

Identify SNOMED concepts in active national refsets that have no EMIS mapping. Filter by cluster or programme and export the full list.

ClinXML™ SNOMED Refset Toolkit | NHS PCD refset browser and EMIS code reference | © 2026 ClinXML™ All rights reserved.

Disclaimer: This toolkit is not affiliated with, endorsed by, or sponsored by NHS England, NHS Digital, EMIS Health, Optum Inc, TPP (The Phoenix Partnership), or any of their subsidiaries. EMIS and EMIS Web are trademarks of Optum Inc. SystmOne is a trademark of TPP. SNOMED CT is a registered trademark of SNOMED International. All trademarks are the property of their respective owners.

Unauthorised copying, distribution, or commercial use prohibited. | By using this application you agree to the ClinXML™ SNOMED Refset Toolkit EULA.

ClinXML SNOMED Refset Toolkit
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