Beyond the 92,571 Care Plan Linkages, Regional Disparities in Nursing Care DX Have Emerged. Fukuoka in February 2027, Okinawa in March 2028: The Current State of Institutional Infrastructure as Told by Municipal Dates

Progress is being made in Kyushu, while major cities are lagging. The twist revealed in the nursing care information infrastructure

As the Care Plan Data Linkage System surpassed 92,571 cases in June 2026, the preparedness status of the nursing care information infrastructure on the municipal side began to be quietly disclosed. Of the 1,741 municipalities, 88.2% have set a start date for usage. The regions leading the way are Kyushu and Okinawa, while the burden is being felt in the Tokai, Kinki, and major metropolitan areas. Why is it that the regions where DX has progressed on the provider side are more cautious on the insurer side? The role of wide-area unions, vendor strain, and the pace of standardization compliance. We trace the structure behind the numbers using field insights and primary sources.

The significance of 90,000 cases and the next issue often overlooked

The usage status of the Care Plan Data Linkage System was announced as 92,571 cases as of June 1, 2026. This information, provided by the National Health Insurance Central Association, is published by the Welfare and Medical Service Agency (WAM), and a breakdown by location has also been disclosed. The figure of 90,000 units using the system indicates that the wiring at the operational level is finally becoming more robust (WAM NET Care Plan Data Linkage System Usage Status).

However, the main battlefield from here on is not within the screens of the service providers. It lies deep within the municipal nursing care insurance systems. The nursing care information infrastructure, being developed against the backdrop of the revised Nursing Care Insurance Act, is designed as a common foundation where municipalities, users, nursing care providers, and medical institutions can electronically view nursing care information. It is a phased mechanism aiming for full utilization by all municipalities by April 1, 2028, starting with data migration and information sharing from municipalities that have completed standardization compliance on or after April 1, 2026 (Ministry of Health, Labour and Welfare 'Materials on Nursing Care Information Infrastructure').

While the Care Plan Data Linkage is a mechanism strongly characterized by digitizing slips between home-visit nursing care support offices and service providers, the nursing care information infrastructure is a higher-level information sharing foundation that bundles information such as long-term care certification, LIFE information, care plans, and nursing care receipts, including insurers, various professionals, and eventually medical institutions. The story of increased wiring on the provider side and the story of trunk line construction to connect that wiring to the national infrastructure must be read as two similar but distinct processes.

The current position of 1,741 municipalities

Aggregating the scheduled usage dates for each municipality disclosed by the Nursing Care Information Infrastructure Portal as of June 18, 2026, out of 1,741 organizations nationwide, 1,536 (88.2%) have a start date entered, 2 (0.1%) are displayed as available, 141 (8.1%) are undecided, and 62 (3.6%) are adjusting schedules. The figure of 11.7% for undecided and under adjustment can be read as having entered a stage where 'nearly 90% have already entered a date' if viewed from a different perspective (
Nursing Care Information Infrastructure Portal Introduction Schedule Map).

However, when rearranged by region, the picture changes.
The ratio of 'available' or 'start date set' is highest in Kyushu and Okinawa at 94.2%, with a median date of April 28, 2027. This is followed by Hokkaido and Tohoku at 90.9%, Chugoku and Shikoku at 89.1%, and Kanto at 88.9%. On the other hand, Tokai and Kinki are relatively lower at 83.0%, and Koshin'etsu and Hokuriku at 82.7%. In regions like Tokai and Kinki, where there are many Care Plan Data Linkage cases—meaning the wiring on the provider side is well-extended—the connection schedule on the insurer side is more cautious. This twist is the most important point of discussion this time.

Two faces of what appears to be 'leading'

In Gifu, Gunma, Ibaraki, Mie, Oita, and Kochi prefectures, all municipalities within the prefecture have a start date entered. Even though the 100% appearance is the same, the content is divided into two types.

The first is a type where the median falls within 2027, like Gunma and Kochi. The pace across the entire prefecture is aligned, and coordination with vendors appears to be progressing relatively smoothly. The second is a type like Ibaraki and Mie, where all municipalities have dates entered, but the median leans toward 2028. It is more accurate to the actual feeling on the ground to distinguish the former as 'fast-moving leaders' and the latter as 'slow but decided leaders'.

What is surprising is Oita Prefecture. Oita City and Beppu City are displayed as 'available,' and dates are listed for all 18 municipalities in the prefecture. It can be read as a region where, rather than competing on population size, the administrative structure of the insurers and the pace of standardization compliance within the prefecture were aligned early on as a result.

What comes to mind here is the existence of wide-area unions in the background of Kyushu and Okinawa's lead. The 33 municipalities participating in the Fukuoka Prefecture Nursing Care Insurance Wide-Area Union are all aligned with the same date of February 17, 2027. The 29 municipalities of the Okinawa Prefecture Nursing Care Insurance Wide-Area Union are set for March 10, 2028, and the 16 towns and villages of the Oshima Wide-Area Union in Hokkaido are set for February 3, 2027. Insurers that process jointly over a wide area move all at once once a decision is made. Conversely, the 6 municipalities of the Suwa Wide-Area Union in Nagano Prefecture remain undecided, and there are still undecided areas in the associations of the Niikawa and Tonami regions in Toyama Prefecture. Wide-area unions are a mechanism that can be both an accelerator and a bottleneck.

Summary chart of this overview