We have noticed that a number of the clinical codes that were previously used as diagnostic codes for Learning Disability are being removed from the business rules. EMIS web has not in most cases been updated yet to reflect these new rules, which means that your system may still be using the previous (v38) searches instead of the new (v39) ones.
For details of the codes included in the v39 release, please see: https://rebrand.ly/QOFv39.
When your practice is updated, some patients who are coded with an 'old' Learning Disability code may disappear from the LD register unless you ensure their record contains a READ code which will translate to a valid SNOMED-CT under the new (v39) rules.
We have written a search that will identify those patients who are on the LD register under the v38 rules, but who will no longer be under the v39 rules. This will allow you to review these patients and decide if they should remain on the LD register. Please see the following document and downloadable search folder which will help identify these patients.