Healthcare diagnostic software

I am considering developing medical software that will provide patients with advice on whether they need to go to the hospital or not. The software will also provide them with the most probable diagnosis along with basic at-home treatment options. I am looking for a more accurate version of ADA for medical diagnosis, with the primary target population being the UK. I need assistance from AI to develop the algorithm for medical diagnosis. It will also include advice for long term medical conditions and information on general problems.