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Mental Health Services Dataset - Analysis of diagnosis recording 16/17 to 25/26

Mental Health Services Dataset - Exploratory analysis of diagnosis recording 2016-17 to 2025-26
Date published:
11 November 2026

Request received

This analysis presents a count of people diagnosed in each year from 2016-17 through to 2025-26 from the Mental Health Services Dataset.

Our response

The analysis also breaks this down by whether a person received a provisional, primary, secondary diagnosis or had a presenting complaint recorded. Additionally to this, counts have been presented for the number of people diagnosed in each year by the diagnosis codes recorded in the dataset.

No attempt to clean or group the diagnosis codes has been made with data presented as submitted to the dataset however only mental health and general conditions have been included. Other diseases have been excluded from this output. This is done with the intention of giving users some context around the completeness of diagnosis recording generally but then also to give an indication of how often specific codes are recorded in the dataset.

For the purposes of this analysis, data between 1 and 4 is suppressed. Data over 5 has been rounded to the nearest 5, zeroes are shown. This is outside of the usual suppression rules applied to MHSDS but this disclosure control has been applied to maintain the utility of the data.

Download the data

Last edited: 11 November 2026 11:11 am