Res Judicata and Healthcare Contracts: The Cassation Court's Ordinance No. 16224/2025 and the Limits of Determination

In the Italian legal landscape, legal certainty is a fundamental pillar that guarantees stability and predictability in relationships between parties. The principle of "res judicata," which prevents a dispute already definitively decided from being re-litigated, plays a crucial role in this context. The Supreme Court of Cassation, with Ordinance No. 16224 of June 17, 2025, has provided an important interpretation on the application of this principle within the scope of accredited healthcare services, clarifying the limits within which a prior judicial determination can extend its effects.

The Context: Accredited Healthcare Services and the Unitary Contract

Healthcare services provided under accreditation represent a significant part of the healthcare offering in our country. They are delivered by private or affiliated facilities operating under an agreement with the National Health Service (SSN). Often, these relationships are governed by annual contracts that provide for a payment mechanism based on advances and final balances. The central issue that arose in the case examined by the Cassation Court, which pitted S. (M. V.) against A. (F. L.), concerned precisely the nature of these obligations and the scope of a judgment on the existence of the contract for the payment of the balance.

The Court of Appeal of Salerno, with a judgment of May 20, 2022, had provided its own interpretation, which was subsequently overturned and remanded by the Supreme Court. The Cassation Court had to determine whether accredited healthcare services constitute periodic or ongoing obligations, or if they fall under a unitary annual contract. The distinction is crucial for understanding how the principle of res judicata can operate.

Healthcare services under accreditation are not periodic or ongoing obligations, but are provided by accredited facilities based on a unitary annual contract, which provides for a payment system with advances and balances, based on invoices issued by individual companies; consequently, once the existence of the contract for a portion of the services rendered for the purpose of paying the balance has been judicially ascertained with the effect of res judicata, the existence of said contract cannot be re-litigated in a lawsuit for the payment of advances based on the same contractual title.

This maxim, the core of Ordinance No. 16224/2025, unequivocally clarifies the legal nature of these services. The Supreme Court, presided over by Dr. Enrico Scoditti and with Dr. Luigi D'Orazio as rapporteur, ruled that these are not obligations that extend over time autonomously, but rather a unitary contractual relationship, albeit structured in a system of partial (advances) and final (balances) payments. This means that a judicial determination of the existence of such a contract for one part of it – in this case, for the payment of the balance – extends its preclusive effect also to the payment of advances, provided that these are based on the same contractual title.

The Effects of Res Judicata: A Fundamental Principle

The principle of res judicata, enshrined in Article 2909 of the Civil Code and Article 324 of the Code of Civil Procedure, establishes that a final and binding judgment has effect for all purposes between the parties, their heirs, or assigns. Its function is twofold: on the one hand, to guarantee the stability of judicial decisions (so-called substantial res judicata), and on the other, to prevent the proliferation of identical or related lawsuits, promoting the efficiency of the judicial system (so-called formal res judicata).

In the specific case of accredited healthcare services, Ordinance No. 16224/2025 further strengthens this principle. If a judge has already ascertained the existence and validity of a unitary annual contract for the services rendered, for example, for the payment of the final balance, it is no longer possible to re-litigate the existence of that same contract in a subsequent lawsuit concerning the payment of advances related to the same services and the same contractual year. This prevents:

• The re-litigation of issues already decided, resulting in a waste of judicial resources.
• Legal uncertainty for the parties involved, who might face conflicting decisions.
• Inefficiency in the management of contractual relationships between service providers and accredited facilities.

The Cassation Court's decision aligns with previous orientations, such as Ordinance No. 10430 of 2023, which already underscored the importance of such preclusion to ensure the coherence and finality of judicial pronouncements.

The Conclusions: Legal Certainty for the Healthcare Sector

Ordinance No. 16224 of 2025 by the Court of Cassation represents an important milestone for the sector of accredited healthcare services. It definitively clarifies that the contractual relationships governing these services are to be understood as "unitary" on an annual basis, and not as a series of distinct and periodic obligations. Consequently, the judicial determination of the existence of a contract for a portion of the services (e.g., the balance) precludes any future dispute over the existence of the same contract for other portions (e.g., advances), provided they refer to the same title.

This ruling is fundamental for all legal professionals, accredited healthcare facilities, and public entities, as it contributes to outlining a framework of greater legal certainty. It strengthens the stability of contractual relationships and prevents unnecessary litigation, promoting more efficient and transparent resource management within the National Health Service. Clarity on the principle of res judicata, applied to such a sensitive sector, is a positive signal for the protection of the interests of all parties involved.