18 Week Elective Care Target (Referral to Treatment: RTT)

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The NHS 18-Week Elective Care Target, also known as Referral to Treatment (RTT), is a key NHS standard for planned (non-emergency) care in England.

What it means

The target states that:

At least 92% of patients should start consultant-led elective treatment within 18 weeks of referral.

What counts as the 18 weeks

  • Start of the clock: When a GP or another healthcare professional refers a patient for consultant-led treatment.
  • End of the clock: When the patient:
    • Begins treatment (e.g. surgery, therapy, or another definitive intervention), or
    • Is formally told that treatment is not necessary, or
    • Declines treatment or is discharged back to primary care.

What services it applies to

  • Consultant-led elective services such as:
    • Surgery (e.g. orthopaedics, general surgery)
    • Outpatient medical specialties
  • It does not apply to:

Current context

  • The 18-week RTT target was introduced in 2008
  • Performance has declined in recent years due to:
    • Rising demand
    • Workforce and capacity pressures
    • COVID-19 backlogs

The 92% standard remains the official target, but it is not currently being met nationally, and recovery plans focus on reducing the longest waits first.

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