About Sigma RTT
A senior expert’s knowledge, on duty for everyone.
Sigma RTT is a free knowledge companion for NHS elective-care teams. It answers questions on Referral to Treatment rules, elective recovery and reporting — drawing only from current published NHS England guidance, and showing the exact clause behind every answer. Built by Acumentice.
01
Every answer carries its source
No answer stands on its own authority. Each one links the precise paragraph it rests on rtt-recording-v5.2 §4.6 so you can open the guidance and verify it yourself. Disagree with an answer? Good — now you have the exact clause to disagree with.
02
If it isn’t in the guidance, it isn’t in the answer
Sigma RTT answers only from the published national guidance suite — not from the open web and not from a general model’s memory. When the guidance is silent or genuinely ambiguous, it says so and tells you where the judgement sits, rather than inventing a rule.
03
Built for three jobs, not one
Validators get rules to the paragraph. RTT leads get drafted SOPs and access-policy sections. Analysts get data items and submission definitions. One cited engine, framed for the way each part of the team actually works.
How it’s grounded
Sigma RTT answers only from current published NHS England guidance, shaped by Acumentice’s hands-on experience across 200+ NHS validation programmes. Every answer links the exact clause it rests on, so you can verify it at source.
Built by elective care experts.
Acumentice is an NHS elective-care consultancy specialising in waiting-list validation, access policy and elective recovery. Sigma RTT distils that operational experience into a companion that thinks like the team behind it — precise, defensible and unafraid to say “the guidance doesn’t cover that.”
200+
NHS validation programmes delivered
134
acute trusts tracked monthly
20
guidance documents in the corpus
≥90%
eval gate before any change ships
Ask your first question. Verify the answer yourself.
Independence disclaimer. Sigma RTT is an independent tool and is not affiliated with or endorsed by NHS England. Answers are AI-generated and must be verified against the published RTT rules suite before being relied on for consequential decisions; they are not official NHS guidance and never constitute clinical advice.
Licensing. The knowledge base and rankings contain public sector information licensed under the Open Government Licence v3.0. Source documents remain © Crown copyright, NHS England.