OAAT AG

What OAAT AG does

OAAT AG (Organisation Ambulante Arzttarife), headquartered in Bern, Switzerland, is the national tariff organization responsible for developing and maintaining Switzerland's ambulatory medical tariff systems. Its core products are TARDOC, a fee-for-service tariff, and Ambulatory Flat-Rates, a case-based bundled payment system comprising 314 flat-rate groups, both of which received Federal Council approval and entered into force on January 1, 2026. The organization is owned by five shareholder associations representing Swiss physicians (FMH), hospitals (H+), health insurers (prio.swiss), cantonal health directors (CDS), and accident insurance (CTM), and operates as a non-profit under Swiss corporate law.

The company delivers its tariff infrastructure through a portfolio of digital tools: a web-based TariffBrowser for consulting tariff positions, a Simulation Tool for statistical transposition of TARMED billing data to TARDOC, the LegiData portal for acquired rights and functional unit recognition, the Applix application tool for tariff development requests, a web-based Grouper for automatic case assignment, and the proprietary Java-based TarifMatcher library for software vendor integration. TarifMatcher consists of three components (Casemaster, Grouper, Mapper) that translate CPTMA codes to TARDOC codes and verify rule compliance. The ambulatory flat-rate structure was empirically grounded on cost and service data from 47 Swiss hospitals and approximately 300,000 outpatient treatments collected from 2019 to 2021.

OAAT AG's revenue is derived from contributions and mandates from its five shareholder associations rather than transactional pricing, and most digital tools (TariffBrowser, Simulation Tool, LegiData) are provided free of charge. TarifMatcher is distributed via licensing agreements to software vendors whose fees are not publicly disclosed. The organization also partners with SASIS (for functional unit recognition data exchange) and BSS (for starting price calculation services), and outsources its web platform to Terminal8 GmbH. As of mid-2026, OAAT AG has submitted its first regulatory revision (Revision 2027) to the Federal Council, establishing an annual maintenance cycle for the national tariff system.

Name

OAAT AG

Legal name

OAAT AG

Website

https://oaat-otma.ch

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

OAAT AG is the Swiss national outpatient tariff organization that develops and maintains TARDOC and Ambulatory Flat-Rates, serving physicians, hospitals, insurers, cantonal authorities, and software vendors across Switzerland with digital tools and reference implementations.

Ownership category

akta.pro rank

Product category

Healthcare Tariff Management Software

SIC

Services-Health Services (8000)

akta.pro industry

PRIMARYHLAJACAF

Health Technology Assessment (HTA) & Reimbursement Policy Bodies

Healthcare & Life Sciences/Public Health, Government & Regulators/Health Policy, Regulation & Compliance Authorities

SECONDARYHLAJANAL

Economic Evaluation & Health Technology Assessment (Public Programs)

Healthcare & Life Sciences/Public Health, Government & Regulators/Health Program Evaluation & Surveillance

SECONDARYHLACABAA

Interoperability Standards, Profiles & Implementation (HL7/FHIR/IHE)

Healthcare & Life Sciences/Digital Health & Health IT/Health Information Exchange (HIE) & Interoperability

Keywords

• Medical tariff management
• Ambulatory billing software
• Healthcare reimbursement systems
• Medical coding software
• Clinical tariff development

Headquarters

HQ city

Bern

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Membership/Shareholder Contributions: OAAT AG is owned by five tariff partner associations (prio.swiss, FMH, H+, CDS, CTM). The organization carries out central tariff development and maintenance tasks for the national ambulatory medical tariff domain on behalf of its shareholders. Revenue is derived from contributions or mandates from its shareholder organizations.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

OAAT AG develops and maintains the national Swiss ambulatory medical tariff system, consisting of TARDOC (fee-for-service) and Ambulatory Flat-Rates (case-based) structures, and provides accompanying digital tools — including a web-based tariff browser, simulation tool, LegiData portal, Applix application tool, and the proprietary Java-based TarifMatcher library — to enable correct billing, reimbursement, and ongoing evolution of the tariff system across Swiss ambulatory healthcare.

Product overview

OAAT AG operates a unified national tariff management ecosystem for Swiss outpatient medical services, consisting of TARDOC (fee-for-service tariff) and Ambulatory Flat Rates (case-based tariff). The product portfolio includes web-based tools (TarifBrowser, Simulation Tool, Web-Based Grouper), a Java software library (TarifMatcher) for third-party software integration, and web portals (LegiData, Applix) for rights management and applications. These interconnected products enable healthcare providers, insurers, cantonal authorities, and software vendors to access, simulate, implement, and manage the new Swiss outpatient tariff system.

Differentiator

Problem solved

Functional benefit

Products and services

• TarifBrowser Interactive web-based tariff browser for searching, filtering, and consulting TARDOC tariff positions and Ambulatory Flat Rates. Features include search functionality for tariff positions with filtering by intrinsic values, and access to the grouping manual for outpatient flat rates. Targeted at Swiss ambulatory healthcare providers, insurers, and software vendors.
• Simulation Tool (Simulationstool) Web-based simulation tool for transcoding TARMED billing data to TARDOC to analyze the financial impact of the new tariff system. Allows statistical conversion of tariff point volumes while maintaining cost neutrality as required by law. Targeted at Swiss ambulatory healthcare providers and insurers evaluating the impact of the tariff transition.
• TarifMatcher Java Library Java-based software library enabling IT companies to correctly implement outpatient medical tariffs (TARDOC and Ambulatory Flat Rates) in their software tools. Contains three main components: Casemaster (defines outpatient treatments), Grouper (determines billing structure), and Mapper (converts CPTMA codes to TARDOC). Available via licensing agreement. Targeted at Swiss healthcare software vendors and IT integrators.
• LegiData Portal Free web portal providing the database of functional units and intrinsic values, and enabling submission of acquired rights (grandfathering) requests for TARDOC and Ambulatory Flat Rates tariff positions, as well as functional unit recognition requests for paramedical chapters. Targeted at Swiss ambulatory providers seeking to secure acquired rights and functional unit recognition.
• Applix Application Tool Application tool for submitting tariff interpretation requests and tariff structure modification proposals. Managed through an annual request window, OAAT AG shareholders (FMH, H+, CDS, prio.swiss, CTM) are authorized to file proposals. Targeted at OAAT shareholder associations and authorized stakeholders.
• Web-Based Grouper (CPTMA-based) Web-based grouper tool that uses ICD-10-GM diagnosis codes and CPTMA procedure codes to automatically assign outpatient treatments to appropriate Ambulatory Flat Rates based on detailed decision trees. Targeted at Swiss ambulatory providers and software vendors needing to map clinical cases to the flat-rate structure.
• TARDOC National Outpatient Tariff Structure National Swiss outpatient medical tariff structure (fee-for-service) developed and maintained by OAAT AG. Approved by the Swiss Federal Council for implementation on January 1, 2026. Replaces the obsolete TARMED tariff and applies to all Swiss ambulatory medical providers and insurers.
• Ambulatory Flat-Rates (Ambulante Pauschalen) National Swiss outpatient medical tariff structure (case-based flat rates) developed and maintained by OAAT AG. Approved by the Swiss Federal Council for implementation on January 1, 2026. Comprises 314 ambulatory flat-rate groups covering the full spectrum of outpatient medical services.

Quantifiable outcome

• Cost-neutral tariff transition from TARMED to TARDOC and Ambulatory Flat-Rates guaranteed by law (Art. 59c OAMal)
• +2 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature6 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• prio.swiss (Association of Swiss Health Insurers)coreStrategic or Co-development Partnerprio.swiss is one of the five shareholders of OAAT AG and represents Swiss health insurers. It participates in the governance of OAAT AG through its representatives on the Board of Directors and working groups, contributing to the development and approval of the national ambulatory tariff system.
• FMH (Swiss Medical Association)coreStrategic or Co-development PartnerFMH is one of the five shareholders of OAAT AG and represents Swiss physicians. It participates in OAAT AG governance and working groups, and is responsible for organizing training on the new tariff system for its member physicians.
• H+ (Swiss Hospitals)coreStrategic or Co-development PartnerH+ is one of the five shareholders of OAAT AG and represents Swiss hospitals. It participates in OAAT AG governance and working groups, and provides training on the new tariff system for its member hospitals.
• CDS (Conference of Cantonal Health Directors)coreStrategic or Co-development PartnerCDS is one of the five shareholders of OAAT AG and represents the 26 cantonal health directors. It participates in OAAT AG governance and ensures cantonal perspectives are integrated into the national tariff system.
• CTM (Medical Tariffs Commission LAA)coreStrategic or Co-development PartnerCTM (Commission des tarifs médicaux LAA) is one of the five shareholders of OAAT AG and handles medical tariffs for accident insurance (LAA). It participates in OAAT AG governance and working groups for tariff development.
• SASIS (Swiss assignment system for health insurance data)coreTechnology or IntegrationSASIS is the operator of the Swiss health insurance data exchange infrastructure. OAAT AG works with SASIS for functional unit recognition applications and for transmitting acquired rights data to insurers. SASIS defines the data transmission format for acquired rights information.
• BSS (Basel Statement Services)minorImplementation/ SI/ Consulting PartnerBSS was contracted by OAAT AG to operate the 'starting price calculation service' per Annex I of the tariff structure convention. BSS manages the registration process for contractual areas requiring starting price calculations and receives declarations from social partners.
• Terminal8 GmbHminorImplementation/ SI/ Consulting PartnerTerminal8 GmbH (Bern) is responsible for the design and programming of OAAT AG's website and digital platforms.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• ATIH (Agence Technique de l'Information sur l'Hospitalisation): ATIH is the French national agency responsible for collecting hospital data and managing the classification of medical activities (CCAM) used in tariff setting. It is comparable to OAAT in its role managing national medical-activity nomenclatures and tariffs on behalf of public authorities.
• NICE (National Institute for Health and Care Excellence): NICE conducts health technology assessment and provides reimbursement and coverage guidance across the UK NHS. While broader than OAAT, it is a peer in producing economically grounded, government-validated evaluations that drive how providers and insurers apply tariffs and coverage rules.
• GKV-Spitzenverband & InEK (Germany): InEK calculates the German DRG (G-DRG) case-based hospital tariffs and EBM ambulatory physician tariffs on behalf of the GKV-Spitzenverband and provider associations. This public-body tariff-maintenance role for ambulatory physician services is structurally comparable to OAAT's mandate.

Others

• SNOMED International: SNOMED International maintains the SNOMED CT clinical terminology used in many national e-health systems. It is an adjacent standards organization to OAAT's role in maintaining and mapping national ambulatory procedure codes (CPTMA) into tariff positions.
• WHO-FIC Collaborating Centre (e.g., BfArM, Germany): BfArM operates the German ICD-10-GM and OPS classifications and is a WHO-FIC collaborating centre, paralleling OAAT's work in code-mapping, nomenclature maintenance, and interoperability between medical coding systems and tariff structures.
• Health Level Seven International (HL7) / FHIR Foundation: HL7/FHIR define the interoperability standards and implementation guides used across healthcare IT. While OAAT's scope is narrower (Swiss ambulatory tariffs), both operate at the intersection of clinical coding, software tooling, and regulatory implementation — relevant for TarifMatcher-style code mapping.
• SASIS AG: SASIS operates the Swiss health insurance data exchange infrastructure that OAAT integrates with for acquired rights and functional-unit recognition. It is a closely linked ecosystem partner — not a competitor — sharing regulatory and data flows with OAAT.

Regional players

• INAMI / RIZIV (National Institute for Health and Disability Insurance, Belgium): INAMI/RIZIV is Belgium's federal body that manages the nomenclature of medical acts and negotiates tariffs with healthcare providers and insurers. It parallels OAAT's role in defining and maintaining ambulatory medical tariffs, but for the Belgian market.
• DBC Onderhoud / NZa (Nederlandse Zorgautoriteit): NZa oversees Dutch healthcare tariffs and DBC-Onderhoud maintains the DBC diagnosis-treatment combinations for hospital billing. Together they perform a function analogous to OAAT: defining and updating a national ambulatory/inpatient case-based tariff structure.

Direct peers

• SwissDRG AG: SwissDRG AG operates the national inpatient tariff system (SwissDRG) in Switzerland, paralleling OAAT AG's role for ambulatory care. Both are national, multi-stakeholder-owned tariff organizations coordinating with the same federal bodies and similar hospital/insurer partners, making SwissDRG the closest functional peer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/oaat-ag

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

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M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OAAT AG