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Hospital and Community Health Services Complaints Collection (KO41a)

Access the data - data on written complaints in the NHS.

BAAS: R00030
Frequency: quarterly

Background to the collection

The Hospital and Community Health Services Complaints Collection (KO41a) has been accepted by the Standardisation Committee for Care Information (SCCI) and is now mandatory.

All NHS organisations and those delivering NHS services are required to submit Quarterly returns to NHS Digital.

The information obtained from the KO41a collection monitors written hospital and community health service complaints received by the NHS. It also supports the commitment given in Equity and Excellence to improve the patient experience by listening to the public voice. The data required for this collection is as follows:

  • section 1: Organisation Details and Organisation Site Details 
  • section 2: Summary of  overall numbers of complaints
  • section 3: Age of patient         
  • section 4: Status of complainant
  • section 5: Service area
  • section 6: Subject area of clinical treatment with sub-categories
  • section 7: Subject area
  • section 8: Profession

Launch and submission dates

PeriodLaunch dateDeadline date
Q1 - 1 April 2016 - 30 June 20173 July 201728 July 2017
Q2 - 1 July 2017 - 30 September 20172 October 201727 October 2017
Q3 - 1 October 2017 - 31 December 20172 January 201826 January 2018
Q4 - 1 January 2018 - 31 March 20182 April 201828 April 2018


icon KO41a summary guidance [302.85KB]
icon Guidance notes for quarterly complaints [521.3KB]
icon SDCS general guidance KO41a [1.27MB]
icon Complaints KO41a data items Lookup_Validations [149.99KB]
icon KO41a SDCS template [20.47KB]

SCDS data collection system

Access the Strategic Data Collection Service (SDCS).

Have a question? Call us on 0300 303 5678 or contact

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