Learning about Patient Needs Group and "Segmentation"

You may notice a test result in your NHS APP referring to “segmentation” or “Johns Hopkins Adjusted Clinical Groups (ACG) system score”.

We use segmentation to group people based on shared characteristics, needs, or behaviours. This allows us to tailor care delivery and policies to better meet the specific needs of each group. 

When we do this for all groups, we get healthier people and a healthier population.

Read the patient need groups for further information

Published: Jan 15, 2026