Who this page is for
Practices invoicing patients, insurers, or other payers
The ZSR number comes from the SASIS provider register. It identifies service providers and is shown in many invoice and reimbursement processes.
For a practice, the ZSR number is core administrative data. It must match the service provision, canton, organization or person, and current register status.
What the ZSR number is used for
The provider register lists medical service providers with categorization and authorization. Insurers use the number to assign invoices, providers, and statistical data.
On invoices the number is therefore not just a formality. A wrong, missing, or mismatched number can trigger questions or delay reimbursement.
Canton, location, and organization matter
SASIS states that ZSR numbers are assigned to the canton in which services are provided. If services are provided in several cantons, a separate ZSR number must be requested for each canton.
For group practices, sole practices, location changes, or organizational changes, check the current register entry before invoicing.
- Check the ZSR situation separately for multiple cantons.
- Update register data after practice changes, not just the website.
- Clarify which number belongs on which invoice when several therapists work together.
Setup in practice software
In software, the ZSR number belongs where invoices and reimbursement receipts can reliably use it. If several numbers or locations exist, the selection must remain traceable.
Before live use, run a test case: record a service, create an invoice, check the reimbursement receipt, and verify that name, address, bank details, ZSR number, and method fit together.
Keep ZSR data current
- Copy the ZSR number directly from SASIS documents.
- Check canton, location, and legal setup.
- Request updates promptly after practice changes.
- Check a test invoice and reimbursement receipt in the software.
- Contact SASIS or the responsible body if anything is unclear.
Common mistakes
- Continuing to use a ZSR number from an old location.
- Confusing a personal number with an organizational number.
- Billing across several cantons with an unchecked number.
- Changing the number only in an invoice template instead of central practice data.
Practice questions
Who issues the ZSR number?
The ZSR number is requested and maintained through the SASIS provider register. Applications for the affected professional groups run through the online portal.
Do I need a separate ZSR number per canton?
SASIS states that the number is assigned to the canton where services are provided. If services are provided in several cantons, a separate ZSR number must be requested for each canton concerned.
Can software automatically verify the ZSR number?
The current register status remains with SASIS. Practice software can use stored practice and invoice data; the register check itself is done with SASIS.
Maintain practice data centrally
Current master data and invoice data reduce questions around invoices and reimbursement receipts.
View PRAXSYS featuresRelated topics
Billing
Tarif 590
Tarif 590 standardizes outpatient complementary medicine services in Swiss supplementary insurance. Recognition, reimbursement, and licensing remain separate topics.
Payments
QR-Bill
The QR-bill combines readable payment data with the Swiss QR Code. It only becomes reliable when master data, invoices, and payment tracking fit together.
Practice setup
Practice Setup
Before launch, more than permits need to be clarified. Practice software depends on master data, services, tariffs, payment process, data protection roles, and a tested workflow.
Sources and further reading
Status, responsibilities, and details can change. For binding information, consult the responsible authorities, registries, insurers, associations, and professional advisors.