Mental Health Minimum Data Set (MHMDS) is a regular return of data from providers of NHS funded adult secondary mental health services, produced during in the course of delivering services to patients. Providers currently submit data every quarter. From Quarter 1 2011/12, a new version of MHMDS (version 4) includes new data items and is processed using a new system. Some of the changes have been introduced to support the implementation of of Payment by Results for mental health.
Note: Incomplete reference data was used in the production of the data quality measure (DQM9) for NHS Occupation Code, which means that the published measure for Q1, Q2 and Q3 final quarterly data, for this measure, are unreliable. The reference data has been updated for the Q4 reports.