Hip replacement · England
What does the 18-week NHS rule mean if I’m waiting for a hip replacement?
In England, the NHS Constitution gives a maximum waiting time of 18 weeks from referral to the start of non-urgent consultant-led treatment, with exceptions. For a hip replacement, the clock usually starts when your referral is received — not when you are put on the surgical list — and reaching 18 weeks does not by itself entitle you to move hospital.
When the clock starts and stops
The referral-to-treatment (RTT) clock normally starts when the hospital or service receives your referral and stops when treatment starts. Some events, set out in NHS England's RTT rules, can stop the clock or start a new one.
So by the time you are listed for surgery, part of your 18 weeks may already have passed.
Exceptions
The right does not apply in some situations, for example if you choose to wait longer, or if delaying treatment is in your best clinical interests.
What it does and does not give you
If you are likely to wait longer than the maximum waiting time that applies to you (generally 18 weeks from referral for non-urgent consultant-led treatment), you can ask the hospital or your local integrated care board (ICB) to look into suitable alternative providers that could see or treat you sooner. Exceptions apply — for example if you choose to wait longer or delaying is clinically appropriate — and it is not an automatic transfer.
It is a maximum-wait standard, not a guarantee of treatment by a particular date, and not an automatic transfer.
What this means for you
- Find your referral date and count from there.
- If you are near or past 18 weeks, ask the hospital about your expected timing.
- Ask about alternatives if you are likely to wait longer than the maximum.
This guide gives administrative information for patients in England. It is not medical advice and cannot predict your operation date.
Frequently asked questions
Short answers first. Tap a question to read more.
Does 18 weeks mean I must be operated on by then?
No. It is the maximum waiting time the NHS aims for, with exceptions. Many patients wait longer. It gives you a basis to ask about alternatives, not a guaranteed date.
Is the 18-week rule the same in Scotland or Wales?
No. This guide covers England only. Other UK nations have their own standards.
See where you stand in 60 seconds
Use our free 18-week calculator to check whether your wait may have passed the NHS Referral to Treatment standard.
Sources & references3
Reviewed against publicly available NHS England RTT guidance and the NHS Constitution.
Editorial transparency
How this guide was put together
- Reviewed against the latest publicly available NHS England RTT statistics and guidance.
- Written and edited by the NHSWaitHelper editorial team.
- Cross-checked against the NHS Constitution and operational guidance.
- Independent — no paid hospital rankings, no hidden sponsorship.
NHSWaitHelper is an independent information platform and is not affiliated with the NHS. We do not provide medical or legal advice. Always speak to your GP, clinician, or a regulated adviser about your individual circumstances.