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HRG4+ 2021/22 Local Payment Grouper

The HRG4+ 2021/22 Local Payment Grouper has been developed to represent the latest updates to the underlying classifications incorporated in the national HRG Design

HRG4+ 2021/22 Local Payment Grouper application

Download the HRG4+ 2021/22 Local Payment Grouper application

The HRG4+ 2021/22 Local Payment Grouper subsumes and replaces the HRG4+ 2021/22 Consultation Grouper published on 24 February 2021.

The updated Grouper should be used for the 2021/22 financial year from 1 April 2021, as it contains the latest updates to the underlying ICD-10 classification, as well as updates to the CDS 6.2.0 with regard to new Main Specialty and Treatment Function codes.

Historically both the Consultation and Local Payment Grouper releases have been used to support the NHS England and Improvement Section 118 Consultation process, and implement the updated tariff proposals. This financial year both publications are not yet available. These releases do not pre-empt anything to be included in the NHSE&I publications in relation to the 2021/22 tariff.

The Local Payment Grouper can be used to:

  • group data and derive HRGs
  • support data quality
  • conduct what-if modelling
  • assist service redesign
  • assess local reimbursement under the National Reimbursement rules for the 2021/22 financial year

It should be used in conjunction with the Grouper User Manual, which explains how data should be sorted and presented for processing by the Grouper. 

As with previous releases, users must be aware that the Grouper does not apply certain tariff business rules; for example, Prescribed Specialised Service flagging, which are used to apply reimbursement top-ups if applicable.

Activities relating to Treatment Function Code or other pre-processing exclusions should also be removed from the input data before running through the Local Grouper. As HRG exclusions are at spell level, and the HRG4+ Grouper produces both episode and spell-level HRGs during the same run, HRG exclusions should be made at spell level following grouping. There is no requirement to group data twice. Organisations choosing not to remove exclusion data may generate HRGs that are excluded from national tariff under national funding policy.

Download documents

Summary of Changes - this document summarises the updates to both the product and underlying design from the last Local Payment product release. Users are advised to read before using the latest Grouper.

Casemix Companion - this document is a starting point and general reference guide for anyone interested in learning about the casemix classification system used by the NHS in England. It provides an introduction to HRGs, Groupers, HRG4+ design concepts and grouping logic, and it contains links to additional resources.

Grouper User Manual - this document provides full instructions on how to prepare and group data using the updated HRG4+ Grouper software application, as well as illustrating how the revised product can be used to support users.

Chapter Summaries - this provides an overview of the scope, composition and grouping logic of individual subchapters, including the update to the new HRG design.

Code to Group - this workbook provides details of constituent elements that contribute to HRG grouping. It contains reference data, such as the ICD-10 and OPCS-4 codes used in the design, procedure and diagnosis hierarchies relevant to a specific design, and the Complication and Comorbidities lists for HRG subchapters. It also includes information on Programme Budgeting Category (PBC) mapping and  comprehensive list of HRG codes.

Test data and expected results - these files provide sample data to test the Grouper installation (running the sample data should result in 90% grouped, 10% ungrouped). The file format of the sample data is representative of that in the default RDFs, provided within the Grouper application. These files can easily be used as example patient data, or as a template to understand the required input to the Grouper to enable successful grouping.

Get involved

If you have any issues, ideas or feedback on the current product, please contact or mail us at

For information

For more details about the National Tariffs for 2021/22, please see the NHS England and Improvement website for updates.

Archive material

Visit our archive to view downloaded historical versions of Groupers and documentation

Last edited: 5 May 2021 3:00 pm