For medical clerical staff, publicly funded medical care is among the most nerve-wracking areas. Benefit certificate formats differ by municipality, copayment rates and caps differ by program, and it is often unclear how to handle a subsidy for a patient who has come from another prefecture. The source of this complexity lies in two systems: national public funding and local single-entity funding. Under Medical DX, master data development is under way in this area. This article organizes what standardization of publicly funded care masters involves and how front-desk work changes.
Disclaimer: This article is general information. Program content, master data status, and municipal handling may change. In practice, always confirm the latest primary sources (MHLW, the Social Insurance Medical Fee Payment Fund, the Digital Agency, and your municipality's published materials).
For the overall map of Medical DX, see What Is Medical DX? The Government Roadmap and Its Three Pillars.
National vs. Local Public Funding
Publicly funded medical care splits broadly in two. Because the two differ fundamentally in character, grasping this distinction is the starting point.
| National public funding | Local single-entity funding | |
|---|---|---|
| Basis | Programs grounded in law | Subsidies municipalities implement independently |
| Examples | Public assistance (medical aid), services and supports for persons with disabilities, intractable disease subsidies, care under the Infectious Diseases Act, care for premature infants | Child medical expense subsidies, single-parent household subsidies, severe disability medical subsidies |
| Number of programs | Organized nationwide under statutory numbers | Exist per municipality, reaching an enormous total nationwide |
| Formats and copayment rates | Common nationwide | Differ by municipality |
Because national programs run on nationwide rules, master data for rececons is relatively simple. The difficulty lies with local funding.
Why Local Funding Is Difficult
Local single-entity funding consists of medical expense subsidies that municipalities and prefectures implement with their own resources. Because they can design them freely as resident services, variation arises:
- Eligible ages differ: even for child medical subsidies, coverage may run to preschool, junior high, or high school depending on the municipality
- Copayments differ: some municipalities are entirely free, some charge a flat amount per visit, some set a monthly cap
- Certificate formats differ: paper size, listed items, and numbering systems vary
- Provision methods differ: some municipalities use "in-kind" provision with no payment at the counter; others use reimbursement, where the patient pays first and is repaid later
From an institution's viewpoint, these differences feed directly into both front-desk calculation and claim submission. For patients visiting from another municipality in particular, the institution may not know that municipality's program at all—leaving even the question of in-kind versus reimbursement hard to judge. That situation persisted for a long time.
Why Master Data Development Began
To improve this, Medical DX is developing the "program master for publicly funded medical care and local government medical expense subsidy programs." Grounded in the Roadmap for Promoting Medical DX and the Regulatory Reform Implementation Plan, its aims fall into three:
- Reduce the burden on institutions and vendors: provide program information—previously scattered across municipalities—centrally as a standardized master
- Reduce the burden on municipalities: eliminate the effort of supplying information to vendors individually
- Eliminate temporary out-of-pocket payment by patients: enable in-kind provision even for patients living in other municipalities
The master has been created by the National Health Insurance Organizations' Federation with municipalities' cooperation, under collaboration among MHLW, the Digital Agency, the Children and Families Agency, MEXT, and the Ministry of the Environment.
The Registration System
A registration system (a web form) lets municipalities register, change, and discontinue subsidy program content. Operation of this system was transferred to the Social Insurance Medical Fee Payment Fund on June 1, 2025. As a rule, municipalities are expected to update registrations at least six months before a change takes effect.
The Link to the Common Billing Module
This is the most important point in practice. Data registered in the local funding master is used by the common billing module to calculate patient copayments.
The common billing module is the nationwide common program for calculating fees and copayments; full operation began for medical and DPC on June 1, 2026. Developing the public funding master is a precondition for that module to calculate copayments correctly.
The relationship runs as follows:
- Municipalities register their subsidy program content in the master
- The standardized master is provided to institutions nationwide
- The common billing module references it to calculate the copayment
Previously, vendors researched each municipality's programs and implemented them in rececons individually. Unifying that duplicated work through a common master is a concrete example of "common masters and codes," one of the three pillars of Fee Revision DX.
The Relationship to Eligibility Checks via PMH
Where the master handles "what the program says," a separate mechanism is needed to confirm "whether this patient qualifies." That role falls to PMH (Public Medical Hub).
As PMH handles eligibility information for publicly funded care and local subsidies, verification of benefit certificates completes with the Myna insurance card, moving toward a world where patients need not bring paper certificates. Institutions will need rececon modifications to support this.
The division of roles:
| Mechanism | Role |
|---|---|
| Public funding master | What subsidy programs exist, and their copayment rates and caps |
| PMH | Whether the patient in front of you is eligible for that program |
Only with both in place does front-desk handling of public funding become automated.
What In-Kind Provision Means
Advancing in parallel is the shift of local funding to in-kind provision, a direction set out by MHLW's Fee Revision DX Promotion Office.
In-kind provision means the patient receives care paying only their copayment at the counter (or nothing at all). Under reimbursement, the patient pays all or part up front and later applies to the municipality for repayment.
As arrangements for contracts between municipalities and the Payment Fund take shape, the expected effects are:
- Patients: no temporary out-of-pocket payment; subsidies apply even at institutions in other prefectures
- Municipalities: the administrative work of receiving, reviewing, and paying reimbursement claims disappears
- Institutions: claim procedures that differ by municipality are rationalized
Impact on Clinic Operations
In the Short Term, Leave It to Your Rececon
Neither master development nor the common billing module is something institutions adopt directly. They take effect through whether the rececon or EMR you use supports them. For now, confirming your vendor's approach is enough.
What to Confirm
- The policy and timing for supporting the public funding master
- Whether online eligibility verification for publicly funded care (PMH linkage) will be supported, and the modification cost and any subsidies
- Support for in-kind provision for patients from other municipalities
Expected Benefits
- Fewer front-desk calculation errors: the master absorbs differences between municipalities, reducing manual judgment
- Fewer returned claims and error adjustments: misstated public funding is a classic cause of returns, and reductions are expected
- Easier handling of out-of-area patients: cases that previously invited hesitation become standardized
- Lighter training burden: staff no longer need to memorize each municipality's program
The more a clinic handles pediatrics, single-parent households, or disability-related care, the greater the benefit from standardization here.
With AI Karte
The AI-native EMR "AI Karte" is a cloud service with an integrated rececon, handling copayment calculation including public funding through claim creation on one foundation. Regulatory revisions and master updates are designed to be reflected on the service side, and we are examining our approach to standardization around publicly funded care in light of implementation progress. AI claim checking additionally helps detect the risk of returned claims arising from misstated public funding.
Conclusion
The complexity of publicly funded medical care stems from a two-layer structure: national programs grounded in law, and local programs designed differently by every municipality. Medical DX is standardizing local program information as master data and connecting it to copayment calculation via the common billing module and eligibility verification via PMH. It is not something institutions adopt directly, but it is an area where practical gains—fewer front-desk errors and returned claims, and easier handling of out-of-area patients—can be expected. Confirm your vendor's approach when selecting or updating a rececon or EMR.
Through providing AI Karte, Pottech aims to be the ideal business partner for clinics—improving the working environment for physicians, nurses, and medical clerical staff, and supporting clinics in fully realizing what they want to achieve.
For more details, please feel free to contact us.
References
- Notice on Registration of Local Public Funding Master Information (Social Insurance Medical Fee Payment Fund)
- On Promoting In-Kind Provision of Local Public Funding (MHLW, Health Insurance Bureau, Fee Revision DX Promotion Office)
- On Promoting My Number Card Use for Medical Subsidy Certificates and Patient Cards (Digital Agency)