- Subscription + Enterprise.
- Not disclosed
- Not disclosed
- —
- 1999
- UK
Isabel Healthcare
by Isabel Healthcare · founded 1999 · UK
Long-standing DDx generator used in 100+ countries.
Long-standing DDx generator used in 100+ countries.
Free tier available.
One of the oldest commercial DDx engines (founded 1999). Strong in NHS, India, LMICs.
What it costs
Free tier only; no paid plans publicly disclosed.
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Plan | — | — | Subscription + Enterprise. |
Source: vendor pricing page. Verified May 23, 2026.
Who builds it
Isabel Healthcare (Isabel Healthcare) was founded in 1999 in UK, putting it 27 years into market.
What the literature says
2 peer-reviewed studies indexed on PubMed evaluate Isabel Healthcare in clinical contexts. The most relevant are shown below, ranked by editorial relevance score combining title match, study design, recency, and journal tier.
- Cracking the code: a head-to-head comparison of expert clinicians and artificial intelligence in diagnosing rare diseases.
- Sendtner GW, Muecke M, Grigull L, et al.· Orphanet J Rare Dis· 2025
- Patients with rare diseases often face prolonged diagnostic journeys due to the low prevalence and diverse clinical presentations of these conditions. In Germany, specialized centers for rare diseases, established at university hospitals, offer targeted diagnostic and therapeutic care to reduce diagnostic delays. Tools like "Isabel Healthcare" can support clinicians by streamlining the differential diagnosis process and aiding in the accurate identification of rare conditions. The study included 100 patients with a mean age of 44 years. "Isabel Healthcare DDx companion" and the interdisciplin…
- Is language an issue? Accuracy of the German computerized diagnostic decision support system ISABEL and cross-validation with the English counterpart.
- Marcin T, Lüthi A, Graf RR, et al.· Diagnosis (Berl)· 2023
- Existing computerized diagnostic decision support tools (CDDS) accurately return possible differential diagnoses (DDx) based on the clinical information provided. The German versions of the CDDS tools for clinicians (Isabel Pro) and patients (Isabel Symptom Checker) from ISABEL Healthcare have not been validated yet. We entered clinical features of 50 patient vignettes taken from an emergency medical text book and 50 real cases with a confirmed diagnosis derived from the electronic health record (EHR) of a large academic Swiss emergency room into the German versions of Isabel Pro and Isabel S…
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