We are required to check our data sharing against the national Opt out database. You are not allowed to hold the opt out status against the record but can maintain a cache of the results for a fixed period but must regularly update it.
There is currently one way this can be checked which is using a MESH mailbox https://digital.nhs.uk/services/national-data-opt-out/compliance-with-the-national-data-opt-out/check-for-national-data-opt-outs-service In the longer term there will be a an HL7 FHIR rest api that can be queried https://developer.nhs.uk/apis/optout/overview_ndop.html.
The All UKRR databases will need to check the opt out status of any records pulled out to ensure we are meeting the patients preferences. This means we need a process to manage the regular checking and maintenance of opt out status with in the cache limits specified by NHS England or we need to submit each extract data identifiers and verify if all identifiers are eligible for this extract.
The deadline to put this process in place was the end of March but has been extended 6 months to 30th September.