You have public health insurance (GKV), probably with TK or AOK. You can see a doctor, get prescriptions, go to hospital if you need to. What's missing?
Quite a bit, actually. Germany's public health insurance covers the essentials, but it operates on a principle called Wirtschaftlichkeitsgebot: treatments need to be "sufficient, appropriate, and economical." In practice, that means a lot of everyday healthcare sits outside the GKV catalog entirely.
Out-patient supplementary insurance (ambulante Kranken-Zusatzversicherung, or just ambulante Zusatzversicherung) fills those gaps. Where in-patient supplementary insurance covers your hospital stay, this one covers the rest: the routine visits, the glasses, the alternative practitioner, the vaccination before a trip, the extra screening your GP recommended but GKV won't pay for.
Important to note upfront: dental supplementary insurance (Zahnzusatzversicherung) is a separate product entirely and is not covered in this article. If you are looking for dental coverage, you can read more about it here.
What does GKV not cover in everyday care?
Most of the gaps appear not in emergencies but in ordinary life. Here is where they show up most often:
Glasses and contact lenses
GKV covers vision aids for children under 18, and for adults with a severe visual impairment (6 diopters or more for short or long-sightedness, 4 diopters or more for astigmatism). For everyone else, glasses and contacts are entirely out of pocket. A decent pair of glasses in Germany starts around €150-200 and goes up from there. If you replace them every two years, that is a real recurring cost.
Alternative and complementary medicine
Visits to a Heilpraktiker (alternative practitioner), osteopathy, chiropractic, acupuncture outside a very narrow GKV-approved list: all self-pay. The GKV covers acupuncture only for chronic back pain and knee osteoarthritis (a rule in place since the G-BA decision in 2006). Everything else comes out of your own pocket. A single session with an alternative practitioner typically costs €60-150, depending on the type of treatment and practitioner.
IGeL services
IGeL stands for “individuelle Gesundheitsleistungen”, or individual health services. These are treatments your doctor can offer but that fall outside what GKV will pay for. Common examples include ultrasound screenings, extended blood panels, glaucoma tests, skin cancer screening for patients under 35, and detailed eye pressure measurements. Your doctor does the service, you receive the bill.
Travel vaccinations
Vaccinations for yellow fever, typhoid, Japanese encephalitis, and similar travel-specific vaccines are not part of the standard GKV benefit catalog. However, many of the largest Krankenkassen (including TK, BARMER, and several AOK branches) now voluntarily cover common travel vaccinations like hepatitis A and B as an additional benefit. This varies significantly by provider, so check with your specific Krankenkasse before assuming you need to pay out of pocket. If your insurer does not cover them and you travel outside western Europe with any regularity, the costs add up quickly: a combined hepatitis A+B vaccination series (Twinrix, 3 doses) runs roughly €180-250 including consultation fees.
LASIK and laser eye surgery
Refractive laser surgery (LASIK, SMILE, PRK) is not covered by GKV under any circumstances, regardless of how severe your vision impairment is. Costs typically run €1,500-2,500 per eye in Germany. For people who have been buying glasses every two years for a decade, this is often a calculation they eventually want to make - and supplementary insurance can help offset it.
Non-prescription medications and some medical aids
GKV covers prescription medications with a co-payment, but over-the-counter medicines, certain dressings, and medical aids not on the approved catalog come out of your pocket.
What does an ambulante Zusatzversicherung actually cover?
The honest answer: it depends on the tariff. This type of insurance is more variable than hospital cover. Some policies focus narrowly on glasses and contacts. Others cover the full range above, including alternative medicine, IGeL services, travel vaccinations, medications, and even treatment abroad.
The most common coverage areas across policies:
Broader tariffs also often cover some non-prescription medication costs and medical aids beyond what GKV allows.
Who should consider ambulante Zusatzversicherung?
If you wear glasses, want to see an alternative practitioner occasionally, or regularly pay for services your GKV does not cover, the numbers tend to work in your favor. The recurring cost of glasses alone can exceed the annual premium on a mid-range policy.
A few situations where it is worth considering:
If you are already in private health insurance (PKV), you do not need this. Outpatient coverage is typically built into PKV tariffs. Ambulante Zusatzversicherung is specifically for GKV members who want to close these gaps without switching systems entirely.
What does it cost?
Premiums depend on your age and the scope of coverage. Entry-level policies covering vision aids only start at roughly €10-20 per month. Mid-range policies adding alternative medicine and preventive care run higher. Comprehensive tariffs covering the full outpatient picture cost more, and increase with age.
A rough orientation for a 30-year-old:
Waiting periods: Most policies include a waiting period before benefits activate. This typically ranges from 3 months to 8 months depending on the plan and the specific benefit category. Some plans have no waiting period at all, particularly for accident-related treatment. Pre-existing conditions may come with exclusions or extended waiting periods depending on the underwriter. This is worth checking carefully when comparing policies, since a tariff with a lower premium but a longer waiting period may not save you anything in the first year.
Premiums increase as you age, so taking out a policy while you are younger generally locks in more favorable rates.
Is it worth it?
Run the numbers for your own situation. A decent pair of glasses in Germany costs €200-500. An osteopathy session costs €80-120. A combined hepatitis A+B vaccination course runs around €180-250. A glaucoma screening or extended blood panel is another €50-100. If you were to realistically spend that kind of money across a year anyway, a mid-range ambulante policy often pays for itself.
What is less obvious is the value in building more consistent preventive care. GKV checkups are real, but they are limited in scope. An ambulante policy gives you access to screenings like annual thyroid panels, detailed cardiovascular markers, or tumor marker tests that GKV only covers once you are already symptomatic. For people with a family history of thyroid disease, cardiovascular problems, or certain cancers, catching something early through a €60 blood test can make a significant difference.
The right policy depends on your age, health priorities, and how you actually use the system. We work through that calculation with clients regularly. If you are not sure what level makes sense for you, feel free to reach out directly, and we will help you figure it out.
Daniel Weiss
Email: daniel.weiss@versicherungsbuero-weiss.com
Telefon: +49 30 - 40 36 31 95 1
Mobil / WhatsApp : +49 178 - 140 584 0
Book a free consultation: https://calendly.com/vb-weiss_daniel/meeting
