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 Document | Topic | Japan adoption status |
|---|---|---|
| IMDRF/MDCE WG/N56 — Clinical Evaluation | Framework for clinical evaluation of medical devices | Adopted — MHLW notification references this framework |
| IMDRF/SaMD WG/N12, N23, N41, N55 — SaMD | Software as a Medical Device framework | Adopted as basis for Programme Medical Device guidance |
| IMDRF/CYBER WG/N60 — Cybersecurity | Cybersecurity principles for medical devices | Referenced in PMDA cybersecurity guidance |
| IMDRF/UDI WG — UDI | Unique Device Identification | Japan UDI system developed in alignment with IMDRF framework |
| IMDRF/GRRP WG/N52 — Good Regulatory Review Practice | Regulatory review consistency | Referenced internally by PMDA |
| IMDRF/MCAR WG — MCAR | Medical device single audit programme | Japan 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