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ISB1523: Anonymisation Standard for Publishing Health and Social Care Data

This process standard for publishing health and social care data provides an agreed and standardised approach to anonymisation.

About this information standard

The law pulls in two opposite directions. Human Rights and Data Protection legislation, along with our domestic common law duty to respect confidentiality, require us to protect information that could identify an individual. The Freedom of Information Act requires public authorities to release information about their activities, and this message is reinforced by the governments transparency agenda.

Although the law makes a clear distinction between identifying and non-identifying data, where that line should be drawn may be far from clear in practice.

That is why this anonymisation standard for publishing health and social care data is needed. This process standard provides an agreed and standardised approach, grounded in the law, enabling organisations to:

  • distinguish between identifying and non-identifying information
  • deploy a standard approach and a set of standard tools to anonymise information to ensure that, as far as it is reasonably practicable to do so, information published does not identify individuals.

Note that this information standard was approved for publication by the Information Standards Board for Health and Social Care (ISB). It has not yet been accepted by SCCI for publication under the Health and Social Care Act 2012.

See the Revised Disclosure Control methodology for Hospital Episode Statistics from 2018 onwards.

August 2019: Update: Note that DCB has been made aware of the need to update this information standard to align with the General Data Protection Regulation (GDPR) and the Data Protection Act 2018. However, work to update the standard is dependent upon the Information Commissioner's Office (ICO) updating its guidance on anonymisation and as yet there is no firm date for this. As soon as this is published NHS Digital, as developer, will publish further information about the timescales for updating this standard. In the meantime, if you have any questions about this standard please contact NHS Digital:  Email [email protected] or telephone on 0300 303 5678.

Current release

Release date 25/02/2013
Release number Amd 20/2010
Release title Initial Standard
Stage Maintenance
Key documents
Supporting documents

Last edited: 8 December 2022 1:31 pm