Skip to main content

KO41A Hospital and Community Health Services Complaints Collection

Frequency: Quarterly


Access Data on Written Complaints in the NHS


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 2021 - 2022

Reporting period

Submission start date 

Submission end date 

Q3: 1 October 2021 to 31 December 2021

4 April 2022

20 May 2022

Q4: 1 January 2022 to 31 March 2022

4 April 2022 20 May 2022

SDCS data collection system

Last edited: 25 May 2022 3:02 pm