On top of mandatory basic insurance (LAMal/KVG), most residents buy supplementary private insurance (Zusatzversicherung/assurance complementaire) for extras basic insurance doesn't cover: private/semi-private hospital rooms, choice of doctor/surgeon, dental care, alternative medicine, and better coverage abroad. Unlike basic insurance, supplementary insurance is medically underwritten — insurers can refuse applicants or exclude pre-existing conditions, so it's best arranged early, ideally before any health issues arise.
Supplementary insurance is the main lever for hospital comfort and doctor choice in Switzerland's system, but because it involves health underwriting (unlike basic insurance, which must accept everyone), waiting to buy it after a health issue emerges can mean permanent exclusions or outright refusal.
Key Facts
Supplementary insurance (Zusatzversicherung) covers private/semi-private hospital rooms, free choice of doctor, dental, alternative medicine, and enhanced travel/abroad coverage — none of which basic insurance covers.
Supplementary insurance is medically underwritten: insurers can decline applicants, apply exclusions for pre-existing conditions, or charge risk-based premiums — unlike basic insurance's guaranteed acceptance.
Many people buy supplementary insurance early (e.g. shortly after or even before establishing Swiss residency) to lock in coverage before any health issues arise that could trigger exclusions.
Supplementary and basic insurance can be (and often are) purchased from different insurers, since basic coverage terms are standardized by law while supplementary products vary by insurer.
Private/semi-private hospital insurance can add several hundred to over a thousand CHF per month depending on age and coverage tier.
Steps
Assess what basic insurance doesn't cover — Identify gaps: private room, doctor choice, dental, alternative medicine, travel coverage.
Apply early — Apply for supplementary coverage before any health issues arise, since underwriting can exclude pre-existing conditions.
Complete a health questionnaire — Insurers typically require a health declaration; be accurate to avoid future claim denial for non-disclosure.
Compare across insurers — Basic and supplementary policies can be split across different providers to get the best combination of price and coverage.
Costs
Supplementary hospital insurance (semi-private/private): Roughly CHF 100-500+/month, age and coverage dependent
Required Documents
Health declaration/questionnaire
Basic insurance policy confirmation
Passport/ID
Common Mistakes
Waiting until a health issue arises to apply for supplementary insurance, risking permanent exclusion of that condition or outright refusal.
Assuming basic and supplementary insurance must come from the same provider — shopping separately for each often yields better value.
Under-disclosing health history on the application, which can void claims later.