Author and Publication
Author: Ben Slater, Registered Social Worker, Founder and Managing Director of Nellie Supports
Reviewed by: Kerry Slater, Director of Operations
Last reviewed: 20 July 2026
Citation
1. Department of Health and Social Care (2022) National Framework for NHS Continuing Healthcare and NHS-funded Nursing Care. Available at: https://www.gov.uk/government/publications/national-framework-for-nhs-continuing-healthcare-and-nhs-funded-nursing-care
2. R v North and East Devon Health Authority, ex parte Coughlan [2000] 2 WLR 622.
3. R (Grogan) v Bexley NHS Care Trust and others [2006] EWHC 44 (Admin).
4. Department of Health and Social Care (2022) NHS Continuing Healthcare Decision Support Tool.
Copywright
Copyright © 2026 Nellie Supports Ltd. All rights reserved.
This article is made available for general information, education and professional reference. It may be downloaded, printed and shared for non-commercial purposes, provided that it is reproduced in full, is not altered in any way, and is properly cited as the work of Nellie Supports Ltd. This material must not be edited, adapted, sold, republished, incorporated into commercial products, or used for commercial training, assessment, report-writing or advisory services without prior written permission from Nellie Supports Ltd.
This article does not constitute legal advice, clinical advice or a substitute for a decision-specific professional assessment. Where legislation, government guidance, court forms or external professional materials are referred to, those materials remain subject to their own copyright, licensing and re-use terms.
Abstract
This guide explains the unpredictability characteristic in NHS Continuing Healthcare decision making. It covers fluctuation and its significance, the difference between variable and unpredictable needs, why the amount of warning matters more than frequency, the consequence of a change not being recognised in time, examples across the care domains, and how to evidence unpredictability.
What unpredictability of need means in a CHC assessment
Unpredictability is the characteristic most consistently under-evidenced, because assessments describe how someone was on the day. A person who is settled at the assessment may still be highly unpredictable across a month.
What unpredictability means
Unpredictability describes the extent to which needs fluctuate and the risk arising from that fluctuation. It asks how far the person's condition can change without warning, how quickly deterioration can occur, and what the consequences would be if a change were not recognised and responded to promptly.
Fluctuation is not the same as unpredictability
Needs can vary to a known pattern, which makes them variable but manageable. Unpredictability adds the question of whether the variation can be anticipated and planned for. A person whose needs rise every evening at a predictable time is easier to manage than one who deteriorates rarely but without any warning at all.
Warning matters more than frequency
This is the point most often missed. An event occurring once a month with no warning, requiring an immediate skilled response, may indicate more need than a daily event that can be anticipated and prepared for. Frequency is relevant, but the absence of warning is what drives the risk and therefore the requirement for continuous skilled availability.
Consequence of a missed change
The other half of the analysis is what happens if a change is not spotted. Where the consequence is serious, such as airway compromise, prolonged seizure, hypoglycaemia, falls with injury or rapid deterioration in a wound, the need for someone competent to be continuously present is greater. State the consequence explicitly rather than leaving it implied.
Examples across the domains
Seizures without prodrome. Sudden behavioural escalation in dementia. Aspiration risk that varies with alertness. Blood glucose instability. Stepwise decline in vascular dementia. Choking risk in Parkinson's during off periods. Each involves something that can change quickly, with limited warning and serious consequences.
How to evidence unpredictability
Record events with dates, how much warning there was, how quickly the situation escalated, what response was required and what the consequence was or could have been. Incident logs, emergency call records, hospital admission records and any near miss documentation are the strongest material here, and near misses are frequently overlooked.
Key takeaway
Unpredictability is about warning and consequence, not just how often something happens. Record events with dates and the warning available, and state the consequence of a change not being recognised in time.
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Frequently asked questions
Is unpredictability the same as fluctuating needs?
They overlap but are not identical. Fluctuation means needs vary. Unpredictability asks whether that variation can be anticipated and planned for, which is what drives the risk.
Do infrequent events count?
Yes, and they can carry considerable weight. An event occurring rarely with no warning, requiring immediate skilled response, may indicate more need than a daily event that can be anticipated.
What if the person was settled at the assessment?
Say so and provide records covering a longer period. An assessment captures one point, and a settled presentation on the day says little about how the picture behaves across a month.
Related NHS Continuing Healthcare pages
These links take you to the most relevant Nellie Supports service page and to the supporting guides that explain the surrounding process.
Speak to an independent CHC specialist
Nellie Supports prepares independent needs evidence for NHS Continuing Healthcare assessments, reviews and appeals across England and Wales. Our reports are written by registered social workers on a permanent employed team, with internal peer review before release. Call 0333 987 5118 or send an enquiry and we will talk through where you are in the process.