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Commissioning Data Sets

Commissioning Data Sets (CDS) enable national reporting on NHS funded or provided secondary care.

"Provided" care is that which is directly provided by the NHS. "Funded" care is paid for by the NHS but provided by another organisation.


The Commissioning Data Sets do not include data about private treatment where there is no NHS involvement.

The Commissioning Data Sets (CDS) are maintained and developed by NHS Digital, in accordance with the needs of the NHS and the Department of Health and Social Care.

CDS form the basis of data on activity carried out by NHS trusts reported centrally for monitoring and payment purposes. They support the current Healthcare Resource Group (HRG) version 4 for calculation of payment to trusts and monitoring of other initiatives including the 18 weeks Referral to Treatment standard. Current developments to the CDS include:

  • development of data items to support 18 weeks Referral to Treatment, such as
    • monitoring the closure of patient pathways
    • updates to the Elective Admission Lists
    • piloting the Future Care Outpatients data items
  • maintenance of treatment function codes and specialty lists to support

All of the changes are reviewed by the NHS Information Standards Board and therefore require evidence that they can be implemented in services and are interoperable with NHS systems.

Requests for changes to the CDS should be submitted via email to stating "Commissioning Data Sets" in the subject line.

Change requests are logged and considered for prioritisation. For changes to be considered, they must have evidence of supporting a business requirement and have sponsorship from the Department of Health.

Changes to the CDS impact on a wide range of organisations and service areas including:

  • NHS Trusts
  • Patient Administration Systems (PAS) suppliers
  • Secondary Uses Service
  • NHS Data Dictionary
  • Payment by Results

The changes need to be assured by the Information Standards Board for Health and Social Care so that approved changes can be mandated via the issuing of a Data Set Change Notice and appropriate notice given of the implementation date.

Last edited: 22 March 2019 12:15 pm