Free symptom checker

Understand your symptoms. Know what to do next.

The right diagnosis is the first step to getting better. codiag helps you make sense of what you are feeling and decide what kind of care to seek: at any time, from anywhere.

Check your symptoms How it works

Not a substitute for a doctor. In an emergency, call your local emergency number.

How it works

  1. 1

    Describe how you feel

    Tell us your age, how long it has been going on and what you are experiencing, in your own words.

  2. 2

    Get a clear assessment

    codiag suggests what might be behind your symptoms and how urgently you should seek care.

  3. 3

    Take the next step

    Bring the summary to your doctor or pharmacist, with the questions they are likely to ask.

Time to improve healthcare for everyone.

Finding the right diagnosis can be a challenge, even for experts. Months or years can go by before treatment begins. codiag is on a mission to put trustworthy medical knowledge within reach of every patient, whether you are worried about yourself or about someone you care about.

More about codiag →

  • Safety first

    Warning signs of an emergency are checked with fixed rules before anything else, and we always lean towards caution.

  • Private by design

    No account, no name, no tracking of your health data. Your description is used once to produce your assessment.

  • Plain language

    No jargon. Every suggestion comes with a short explanation of why it might fit.

For hospitals and clinics

Clinical decision support, built around your practice.

Beyond our free symptom checker, codiag designs custom clinical decision support solutions for hospitals, clinics and healthcare networks. We adapt them to your specialties, your patients and your systems.

Get in touch

Or write to us at info@codiag.com .

  • Diagnostic support

    Differential diagnosis suggestions that help clinicians consider the full picture, with the reasoning behind each suggestion.

  • Triage and patient intake

    Structured pre-consultation questionnaires and urgency assessment, so patients arrive with a clear summary of their case.

  • Integrated with your systems

    Delivered inside the tools your teams already use, connected to your hospital information system and patient records.

  • Tailored and private

    Adapted to your specialties, languages and protocols, and designed with Swiss and EU data protection requirements in mind.

Not feeling well?

It takes about two minutes. No account needed.

Start the symptom checker