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Delen is NHS Digital’s specialist collaboration and information sharing platform for our national terminology and classifications standards. You will be able to find detailed content relating to: dm+d, ICD-10, ICD-11, OPCS-4 and SNOMED CT as well as links to useful resources that will help you to make best use of the standards. You will also be able to see collaborations that are taking place and find out about opportunities to collaborate with us on future developments.

We hope you find Delen useful and if you have any comments or suggestions for how we could improve it, please get in touch with us.


Delen came about as a result of responses to the annual survey we ran last year.

We are currently running this year’s survey and would very much welcome your feedback to help us improve the service we deliver to you.

If you can spare a few minutes, please click the button below to complete the survey which closes on 31st March 2017.






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