Update information
September 2022: We updated this guidance to reflect new evidence. These updates are marked [2021]. We also made editorial changes to section 1 to align with the current NICE editorial style. Details of the changes are explained in the review decision.
Minor changes since publication
December 2025: Medical technologies guidance 38 has been migrated to HealthTech guidance 486. The recommendations and accompanying content remain unchanged.
ISBN: 978-1-4731-2947-4