The verdict in three sentences
Custom software for a specialist practice in Lyon costs 40,000 to 70,000 EUR excl. VAT for the core (patient record, calendar, billing), plus 15,000 to 35,000 EUR excl. VAT of advanced modules. Certified HDS hosting and integration with the health card / third-party payment are unavoidable and weigh on the recurring budget. The main return on investment is operational: up to -30 % no-shows through automatic reminders, meaning medical slots recovered every week.
What the core and modules cover
The core meets the practice's vital needs; modules add differentiating value by specialty. Here is the 2026 breakdown.
| Component | 2026 range (EUR excl. VAT) | Time |
|---|---|---|
| Patient record + calendar core | 40,000 to 70,000 | 3 to 5 months |
| Teleconsultation module | 8,000 to 18,000 | +4 to 6 wks |
| Digital prescriptions module | 4,000 to 10,000 | +3 to 4 wks |
| Imaging / DICOM module | 6,000 to 15,000 | +5 to 7 wks |
| Patient app (reminders) | 5,000 to 12,000 | +4 wks |
| Health card integration | 5,000 to 15,000 | +3 to 5 wks |
Start with the core, then prioritize modules by the volume of patients concerned: a dermatology practice favors imaging, a psychiatry practice favors teleconsultation.
Security, HDS and health GDPR compliance
Health data is classified as sensitive (GDPR Article 9). Security is not a cosmetic layer but the backbone of the project.
| Requirement | Implementation | 2026 cost (EUR excl. VAT) |
|---|---|---|
| Certified HDS hosting | Approved datacenter | 100 to 400 /month |
| Encryption at rest + transit | AES-256 / TLS 1.3 | Included in build |
| Access traceability | Timestamped logging | 3,000 to 7,000 |
| Strong authentication | 2FA practitioners | 2,000 to 5,000 |
| GDPR register + external DPO | Annual support | 4,000 to 9,000 /year |
| Encrypted redundant backup | Tested restore | 60 to 200 /month |
An annual audit confirms compliance and reassures your patients: confidentiality becomes a commercial argument as much as an obligation.
Mini case study
Dr Rousseau runs a 6-specialist practice in Lyon with about 4,200 consultations per month. The no-show rate is around 12 %, i.e. 504 missed appointments/month. At an average value of 45 EUR excl. VAT per consultation, that means 504 × 45 = 22,680 EUR excl. VAT of lost revenue per month. By deploying the patient app at 10,000 EUR excl. VAT (SMS/push reminders), no-shows drop to 8.4 % (-30 %), i.e. 151 appointments recovered/month = 6,795 EUR excl. VAT/month. The module pays for itself in under 2 months, then generates a net gain every month. On the full core at 55,000 EUR excl. VAT, overall break-even is reached in 8 to 10 months.
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FAQ
Can we start with the core alone and add modules later?
Yes, and it's recommended. The core at 40,000-70,000 EUR excl. VAT ships in 3 to 5 months, then each module is added in increments of 4,000 to 18,000 EUR excl. VAT without rebuilding everything.
Is teleconsultation reimbursable and compliant?
Yes, provided the regulatory framework and HDS hosting are respected. The module costs 8,000 to 18,000 EUR excl. VAT and includes secure video and traceability.
How much is health card integration?
Between 5,000 and 15,000 EUR excl. VAT depending on third-party payment and Vitale-flow complexity. It is a separate item from the core.
What is the real ROI lever?
Reducing no-shows. At -30 %, a practice with 4,000 consultations/month recovers several thousand euros monthly, which often repays the patient module in under 2 months.
Who owns the code and the data?
You do. Unlike SaaS, custom makes you owner of the source code and the patient database, hosted with a certified HDS you control.
Let's scope your project. Tell us your specialty, consultation volume and priority modules: we'll price core + modules and estimate your no-show ROI. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.