Please read the Summary of Changes provided with this release to understand the changes made since the HRG4+ 2017/18 Reference Costs Grouper and the update to the Grouper software application.
Casemix Companion - this document is a starting point and general reference guide for anyone interested in learning about the casemix classification system. It gives an introduction to HRGs, groupers, HRG4+ design concepts and grouping logic.
Grouper User Manual - this document explains how data should be sorted and presented for processing by the Grouper.
Chapter Summaries - this document provides an overview of the scope, composition and grouping logic of individual subchapters, including the update to the 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 a comprehensive list of HRG codes and labels.
Test data and expected results - this folder contains sample data that can be used to test the Grouper installation (running the sample data should result in 90% grouped, 10% ungrouped). The file format is representative of that in the sample RDFs, provided within the Grouper application. These files can be used as example patient data, or as a template to understand the required input to the Grouper to enable successful grouping.
Roots - this workbook identifies new HRGs, deleted HRGs and changes to existing HRG labels between Reference Costs designs.
Trimpoints - this workbook identifies the episode and spell-level trimpoints used to collect Reference Costs for each HRG in a given year. Spell-level trimpoints at the HRG level are split between elective and non-elective admissions. This means there are 3 trimpoints per HRG, 1 at episode level and 2 at spell level.
Grouper Trimpoint Methodology - this document explains the methodology for the calculation of the trimpoints which, are output by this product.
The Reference Costs collection is carried out and supported by NHS Improvement. Find out more on the NHS Improvement website.
Visit our archive to view and download historical versions of Groupers and documentation.