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IMDRF Guidance Adoption Status

Japan's role in IMDRF

Japan is a founding member of the International Medical Device Regulators Forum (IMDRF) and has been actively involved in developing IMDRF guidance documents through PMDA's participation in working groups.

MHLW and PMDA use IMDRF guidance to progressively harmonise Japan's regulatory requirements with other major markets (EU, US, Australia, Canada). This has significantly improved the acceptability of foreign clinical data and the alignment of technical documentation requirements.

Key IMDRF guidance Japan has adopted

IMDRF DocumentTopicJapan adoption status
IMDRF/MDCE WG/N56 — Clinical EvaluationFramework for clinical evaluation of medical devicesAdopted — MHLW notification references this framework
IMDRF/SaMD WG/N12, N23, N41, N55 — SaMDSoftware as a Medical Device frameworkAdopted as basis for Programme Medical Device guidance
IMDRF/CYBER WG/N60 — CybersecurityCybersecurity principles for medical devicesReferenced in PMDA cybersecurity guidance
IMDRF/UDI WG — UDIUnique Device IdentificationJapan UDI system developed in alignment with IMDRF framework
IMDRF/GRRP WG/N52 — Good Regulatory Review PracticeRegulatory review consistencyReferenced internally by PMDA
IMDRF/MCAR WG — MCARMedical device single audit programmeJapan participates in MDSAP discussions

Documents under consideration or in progress

IMDRF continues to publish new guidance. Japan's current areas of active engagement include:

  • AI/ML post-market change management
  • Real World Evidence for medical devices
  • International Regulatory Reliance (building on existing IMDRF reliance frameworks)

Practical implications of IMDRF alignment

For overseas manufacturers, Japan's IMDRF adoption means:

  • Clinical evaluation reports prepared for EU MDR or FDA can often be adapted for Japan with relatively modest modifications
  • Technical documentation structured to STED format (IMDRF-recommended) is acceptable to PMDA
  • Cybersecurity documentation prepared for FDA cybersecurity guidance will largely meet PMDA expectations
  • PMDA pre-submission consultations increasingly reference IMDRF guidance as the starting framework for data expectations