Electronic Invoicing for Multi-specialty Clinics: the 10 frequently asked questions

Electronic invoicing for multi-specialty clinics: regulations, Sistema TS (Italy's Health Card System), and the 10 most common questions

Electronic invoicing for multi-specialty clinics is a complex area of rules, administrative obligations and penalty risk that confuses many managers. Not all healthcare invoices follow the same route: invoices to individual patients are still exempt from some obligations (but not all), while B2B invoices (companies, hospitals, insurers) are fully digital. On top of this, Sistema Tessera Sanitaria (TS) requires service data to be sent so that 730/22 tax deductions can be calculated, with tight deadlines and significant penalties for failure to comply.

In this article we look at the legal framework in force (including Decree Law 202/2024), distinguish between SdI obligations and TS obligations, answer the 10 most frequent questions from multi-specialty clinic managers, set out the penalties for non-compliance, and show how integrated practice management software such as BeebeeDoc automates invoicing and Sistema TS, reducing errors and guaranteeing full legal compliance.

The current regulatory landscape for healthcare invoicing in Italy

Invoicing in healthcare is governed by three interconnected regulatory pillars. The Digital Administration Code (CAD, Legislative Decree 82/2005) establishes that all invoices in Italy must be issued in digital format (XML) and transmitted through the Sistema di Interscambio (SdI) run by the Agenzia delle Entrate (Italian Revenue Agency). This has applied since 2019 for B2B and public administration, while an exception applies for B2C (invoices to patients).

Decree-Law 202/2024 (the Milleproroghe Decree, converted by Law 227/2024) extended the exemption for invoices issued by healthcare operators to individual patients until 31 December 2025. This exemption allows multi-specialty clinics to continue issuing paper or digital (PDF) invoices without passing through SdI. However, this exemption applies only to services delivered directly to individual patients - if the invoice is to a company, a public body or a professional, the obligation to issue an electronic invoice through SdI applies in full.

The third pillar is the Sistema Tessera Sanitaria (TS). Every healthcare provider (doctor, dentist, multi-specialty clinic, laboratory) that issues invoices for healthcare services must send the service data to the TS so that patients can claim tax deductions in their pre-filled Italian tax return. The obligation does not depend on whether the invoice is on paper or electronic—it is a parallel obligation. Deadline: the 15th of the month following the service.

Difference between SdI (Sistema di Interscambio) and Sistema TS (Tessera Sanitaria)

Many administrators confuse SdI and Sistema TS (Italy's Health Card System). They are two completely different systems that coexist.

SdI (Sistema di Interscambio, Italy's invoice exchange system): is the national "postman" of invoicing. All B2B and public administration invoices are sent through the SdI, which routes them to the recipient. It is run by the Agenzia delle Entrate (Italian Revenue Agency). An invoice sent through the SdI generates a transmission receipt (NDT-Notifica di Trasmissione, transmission notification) and a delivery receipt. For multi-specialty clinics, sending through the SdI is mandatory only for invoices not addressed to individual patients.

Sistema TS (Italy's Health Card System): is a database run by the Agenzia delle Entrate (Italian Revenue Agency) in which all healthcare services provided are recorded. The data allows citizens to complete the 730 form, attaching the summary of the healthcare expenses they have incurred. The healthcare provider transmits a monthly XML file containing the service data. It is not an "exchange" of documents; it is a "communication" of aggregated data.

A multi-specialty clinic that invoices only individual patients: - does NOT have to use SdI (exemption until 31.12.2025). - MUST use Sistema TS (permanent obligation).

A multi-specialty clinic that also invoices companies or public bodies: - MUST use SdI for B2B/PA invoices. - MUST use Sistema TS for all healthcare services.

The 10 frequently asked questions about electronic invoicing for multi-specialty clinics

1. Must multi-specialty clinics issue electronic invoices to patients?

No, the exemption remains in force until 31 December 2025. A multi-specialty clinic can continue to issue paper invoices to patients without passing through SdI. However, from 2026 the Government may remove the exemption. We already recommend preparing by digitising your processes.

2. Must I transmit data to Sistema TS (Italy's Health Card System) even if the invoices are on paper?

Yes, absolutely. The TS transmission obligation does not depend on the invoice format. Even if you issue paper invoices, you must send the data to Sistema TS every month, by the 15th of the following month, so that patients can claim their tax relief. Failing to comply carries penalties of up to 2% of turnover.

3. What data must I send to the Sistema TS?

Sistema TS (Italy's Health Card System) requires: the patient's tax code, the date of the service, a description of the service (SSN TARIFFA code), the gross amount of the service, and the VAT amount (if applicable). Also the multi-specialty clinic's details: VAT number, registered office, and SSN authorisation (if accredited). Without this information, the service cannot be credited to the patient in the 730 tax return.

4. Can I use practice management software to automate SdI and Sistema TS?

Yes, completely. Good practice management software (such as BeebeeDoc) automates: generation of the invoice in XML to standard, automatic sending through SdI for B2B invoices, creation of the TS file with the correct data, submission by the deadline of the 15th of the month. The software reduces manual errors and missed deadlines to zero.

5. What are the penalties for failing to transmit to the Sistema TS?

The Agenzia delle Entrate (Italian Revenue Agency) imposes administrative penalties from 100 euros to 2% of the monthly turnover in which the omission occurred. For example, a multi-specialty clinic with monthly turnover of 50 thousand euros that does not transmit the TS file risks a fine of 1,000 euros. Over 12 months, the total is significant. In addition, the Garante della Privacy can impose penalties for GDPR breaches if patient data is processed without consent.

6. How do you archive a digital invoice for 10 years?

The rules require "certified archiving"-storing the XML files electronically, with a qualified digital signature, in a secure Location. BeebeeDoc practice management software includes a built-in archiving service: every invoice is digitally signed at the moment it is generated and stored with a cryptographic hash. No extra cost. The archiving is certified and can be verified by the Agenzia delle Entrate (Italian Revenue Agency).

7. Is a printed paper invoice legally valid?

A printed invoice loses its legal form. If you print it, its legal value is lower. It is better to keep invoices in digital format (signed PDF) and deliver them by email. If a patient asks for a paper copy, it is advisable that it be countersigned by the doctor and stamped by the practice, but it remains a copy—the original is the digital document.

8. Do I need SSN authorisation to issue invoices with Sistema TS?

No, not necessarily. Even a private doctor who is not accredited with the SSN can transmit data to the Sistema TS, provided they have a VAT number. However, if you are accredited with the SSN, the Sistema TS is a requirement of the agreement.

9. Can I invoice different types of service (healthcare and non-healthcare) together?

Yes, but with care. A healthcare service must be kept separate from non-healthcare services in the invoice. For example, if you invoice a medical appointment + the sale of medicines, the two services must be on separate lines of the invoice. This is because Sistema TS accepts only healthcare services—medicines sold over the counter do not go into TS.

10. What happens if I get the data wrong in the TS transmission and notice afterwards?

Sistema TS allows "corrections" to be sent in the following months. If you transmit incorrect data in January and notice in February, you can send a correction file in February indicating the error. Sistema TS will accept the correction. However, it is a practice to be avoided - it is better to check the data before transmitting.

Compliance obligations and penalty risks for 2024-2025

A multi-specialty clinic that fails to meet its invoicing and Sistema TS obligations risks cumulative and serious penalties. The Agenzia delle Entrate (Italian Revenue Agency) also carries out checks through electronic audits, cross-referencing invoiced data with the data transmitted to the TS. If there is a discrepancy, a check is triggered.

Examples of breaches and penalties: failure to transmit to the TS for one month (fine 100-2,000 euro), invoices not kept for 10 years (fine 500-3,000 euro for each document not kept), SdI invoices with missing data (fine proportional to the amount, up to 10% of the invoice), GDPR non-compliance in handling TS data (Garante penalty up to 20 million euro for major breaches).

In addition, in the event of an inspection, if the documentation is inadequate, the practice can be shut down until compliance is restored.

How BeebeeDoc automates invoicing and Sistema TS

BeebeeDoc is a cloud medical practice management software that fully integrates the invoicing cycle and the Sistema TS. It works transparently for the doctor:

Phase 1 - Visit and invoicing: the doctor completes an appointment in BeebeeDoc, selects the type of service (with a standard SSN TARIFFA code), and clicks "Generate Invoice". BeebeeDoc automatically creates the XML document compliant with Agenzia delle Entrate standards, takes the patient's tax code from the system, calculates the VAT amount (if applicable), and saves the document.

Phase 2 - SdI and paper routing: if the invoice is to an individual patient, BeebeeDoc generates it in PDF/email and does not send it through SdI (in line with the exemption). If the invoice is to a company or public body, BeebeeDoc automatically sends it through SdI, tracks the transmission receipt (NDT), and notifies the doctor of the outcome.

Phase 3 - Sistema TS transmission: each month, BeebeeDoc collects all the services invoiced in the month, creates a compliant TS XML file, and sends it automatically by the 14th of the following month (one day ahead of the deadline). Every transmission is recorded and can be checked.

Phase 4 - Certified archiving: every invoice is signed digitally at the moment it is created, archived with a cryptographic hash, and kept for 10 years on GDPR-compliant servers with geographically redundant backup. If the Agenzia delle Entrate (Italian Revenue Agency) requests a check, BeebeeDoc provides a certified report.

Integration between invoicing, clinical records and bookings

One advantage of BeebeeDoc is that invoicing, the clinical record and bookings are fully integrated. When a patient books an appointment, the system pre-fills the data in the invoice. When the doctor finishes the appointment, the invoice is already “almost ready” with the right data. There is no hunting for missing data, no double typing, no risk of forgetting the tax code or the TARIFFA.

BeebeeDoc also keeps a full audit trail: who invoiced, when, which version, which changes, who signed it. This is essential for accountability and for demonstrating compliance in the event of an inspection.

More FAQs on multi-specialty clinic invoicing

Can I invoice a telemedicine/video consultation appointment?
Yes, the service is the same. The SSN TARIFFA code is identical, whether the visit is in person or by video consultation. You simply note “telemedicine visit” in the visit report.

If a patient does not provide their tax code, can I still invoice?
Legally yes, but for the Sistema TS the tax code is mandatory. Without it, the patient will not then be able to claim the cost back in the 730, the pre-filled Italian tax return. Advise the patient to provide the tax code before the appointment.

Do I have to issue an invoice even if the patient pays cash?
Yes, the obligation to invoice does not depend on the payment method. An invoice is due in any case, regardless of how the patient pays.

What does medical invoicing software cost?
Complete practice management software such as BeebeeDoc costs between 45 and 200 euros a month depending on the number of users and services. This includes invoicing, Sistema TS (Italy's Health Card System), the clinical record, bookings, digital signing and certified archiving. It is a minimal investment given the value of compliance and fewer errors.

Future roadmap: what to expect from 2026

The exemption for invoices to patients expires on 31 December 2025. From 1 January 2026, the Government is likely to require electronic invoicing through SdI for individual patients too, bringing them into line with other professional categories. In addition, the Garante della Privacy is pushing to protect patients' sensitive data (type of illness, medicines) that could be exposed by passing through SdI. The debate is still open.

In the meantime it is wise to prepare: adopting practice management software that supports electronic invoicing (through SdI) means no surprises at the end of 2025. BeebeeDoc is ready for this transition.

Conclusion: electronic invoicing as the compliance standard

Electronic invoicing for multi-specialty clinics is not an optional complication; it is a legal obligation with severe penalties for failure to comply. The distinction between SdI and Sistema TS (Italy's Health Card System), the retention obligations, the monthly deadlines and the risk of an audit by the Agenzia delle Entrate (Italian Revenue Agency) create an administrative complexity that is impossible to handle by hand without errors.

A cloud medical practice management software such as BeebeeDoc automates everything-from generating the invoice to sending it through the SdI, from the TS transmission to certified archiving. It lets doctors concentrate on patient care, not on paperwork. It also guarantees full compliance and reduces the risk of a penalty to zero.

If your multi-specialty clinic has not yet put in place practice management software with integrated invoicing, now is the time. Try BeebeeDoc free for 15 days—no card required—and see how to make the administration of your medical practice far simpler while staying fully compliant with the strictest rules.