TDDI explained for event medical providers
What treatment of disease, disorder or injury (TDDI) means for event medical providers, who counts as a listed professional, and what is exempt.
TDDI, treatment of disease, disorder or injury, is the regulated activity most event medical providers now need to register for. Since the 2026 amendment regulations removed the old exceptions for sports grounds and temporary event arrangements, treatment at an event is judged exactly as it would be in a clinic.
When treatment is TDDI
Treatment is TDDI when it is carried out by, or under the supervision of, a listed healthcare professional, or by a team that includes one supervising in their professional capacity.
Who is a listed professional
- doctors;
- nurses and midwives;
- paramedics;
- operating department practitioners;
- dental professionals;
- radiographers, biomedical scientists and clinical scientists.
Emergency care assistants, ambulance care assistants, community first responders, physiotherapists and pharmacists are not on the list.
What is still exempt
- genuine first aid;
- transport within the boundary of the event site;
- an NHS GP working only from an equipped consulting room on site, with conditions;
- care a club arranges for its own employed players.
When you need a second regulated activity
Taking people beyond the event boundary, for example to hospital, also needs registration for transport services, triage and medical advice provided remotely.
Who registers
The healthcare provider that carries on the activity, never the event. A volunteer doctor who is solely responsible for their own care registers as an individual; if a governing body engages them to provide care on its behalf, the governing body registers.
Read our full guide to CQC registration for event medical providers. Not sure if you are in scope? Our event healthcare CQC registration support starts with a free 30-minute call.
Free download: event medical CQC readiness checklist as Word or PDF.
Related
CQC registration for event medical providers
The full 2027 guide: who must register, first aid or TDDI, and how to apply in time.
Read moreEvent healthcare CQC registration support
Scope review, provider set-up, statement of purpose, policies and interview practice.
Read moreHow to register with CQC
A step by step guide for new providers.
Read moreEvent healthcare provider? Find out if you need to register.
A free 30-minute call to check whether your service is in scope and what to have in place before 1 March 2027.