The MHMDS is a regular return of data generated by providers of adult secondary mental health services in England, in the course of delivering services to patients. From Q1 2011/12 onwards, the MHMDS also includes data from Independent Sector Organisations and is processed using the new system. Full details of the methods used in processing can be found in the MHMDS Version 4 User Guidance and Appendices (see related links).
The MHMDS dataset is received by the HSCIC as record level anonymised data from patient administration systems, Care Programme Approach systems and Mental Health Act administration systems.
Changes to this publication
From April 2013, MHMDS will be collected and published on a monthly basis in order to support the implementation of Payment by Results. The scope of our routine MHMDS publication will change and we will be issuing a methodological change paper on the HSCIC website (www.hscic.gov.uk/pubs/methchanges) .