What MO169 is

Japan’s quality management system requirements for medical devices and in vitro diagnostics are set by MHLW Ministerial Ordinance No. 169 (MO169), the “QMS ordinance”. It applies to marketing authorization holders and registered manufacturing sites, including foreign sites.

A short history

PMDA summarizes the ordinance’s evolution (PMDA):

YearChange
2004First version, harmonized with ISO 13485:2003
2014Chapter 2 aligned more closely with ISO 13485:2003; Japan-specific additions moved to Chapter 3
2017Requirements for re-manufactured single-use devices added
March 26, 2021Chapter 2 revised to align with ISO 13485:2016
March 25, 2024End of the three-year transition; MAHs and registered sites must comply

Structure: ISO 13485 plus Japan-specific chapters

  • Chapter 2 mirrors ISO 13485:2016. PMDA publishes a comparison table between the two.
  • Chapter 3 contains additional requirements specific to Japan, such as those for marketing authorization holders.
  • Chapters 4, 5 and 5-2 cover further categories, including specific product types; PMDA posts tentative English translations of these chapters.

For a US manufacturer certified to ISO 13485:2016, Chapter 2 should already be largely covered. The work is in Chapter 3 and in the MAH’s responsibilities.

How MO169 compares with FDA’s QMSR

Since February 2, 2026, FDA’s Quality Management System Regulation also incorporates ISO 13485:2016 by reference. That means the US, Japan and MDSAP now share the same core standard. Differences remain in the country-specific additions: FDA’s additional provisions and inspection approach on one side, Japan’s Chapter 3 and MAH system on the other. A combined procedure set with a clause crosswalk to ISO 13485, MO169 Chapter 3 and FDA-specific requirements is the efficient approach for companies selling in both markets.

Where to find the texts

  • Japanese ordinance text: MHLW database and e-Gov Law Search.
  • English: PMDA’s comparison table (ISO 13485:2016 vs Chapter 2) and tentative translations of Chapters 3, 4, 5 and 5-2 (PMDA). They are labeled tentative, and PMDA’s site notes that files are not machine-translated.
  • Notifications: MHLW notifications interpreting MO169, in Japanese.

Reuse terms

MHLW and PMDA website content is generally available under the Public Data License 1.0, which permits commercial use and translation with source citation and an edit notice, and excludes logos and content under other terms (MHLW; PMDA website policy). One caution: PMDA’s comparison table sets the ordinance next to ISO 13485 clause structure. ISO 13485 itself is copyrighted, so do not assume PDL1.0 covers any ISO text that a document reproduces.

PMDA also states that bulk, excessive or frequent downloads and automated crawling are not permitted on its website (PMDA). Collect documents deliberately rather than by scraping.

Using MO169 in AI and RAG

  1. Keep ordinance and explanation separate, as our source list advises: tag ordinance articles, notifications and explanatory slides differently.
  2. Store version dates: 2014 vs 2021 Chapter 2 text matters when reviewing older audits.
  3. Map, don’t copy, ISO text: link MO169 articles to ISO 13485 clause numbers without loading the ISO standard unless you hold an AI-use license.
  4. Label translations as tentative or edited.

Common mistakes

  • Assuming ISO 13485 certification alone satisfies MO169.
  • Overlooking Chapter 3 MAH obligations.
  • Loading ISO text into an AI tool via a comparison document.
  • Scraping PMDA pages in bulk.

Checklist

  • Confirm compliance with the 2021 Chapter 2 (ISO 13485:2016) text
  • Gap-check Chapter 3 Japan-specific requirements
  • Clarify MAH and site responsibilities
  • Build one crosswalk covering MO169, ISO 13485 and QMSR
  • Apply PDL1.0 attribution and respect PMDA download limits

How AskDona helps

AskDona reads your quality manual and procedures against the MO169 requirements you load and shows, for each article, where your documents address it, with page citations. Run a sample MO169 gap check on Chapter 3. AskDona shows the evidence; your quality and regulatory teams decide.

Editor’s note: MO169 history comes from PMDA’s English page; translations there are tentative. QMSR context is from earlier verified sources in this series. Licensing notes are not legal advice; our “conditional use” rating is a first-pass judgment.

FAQ

What is MO169? Japan’s QMS ordinance for medical devices and IVDs.

Is MO169 the same as ISO 13485? Chapter 2 aligns with ISO 13485:2016; other chapters add Japan-specific requirements.

When did the 2021 revision become mandatory? After a three-year transition ending March 25, 2024.

Is there an English version? PMDA provides a comparison table and tentative translations.

References

All pages opened and checked by October 26, 2026.

SourceTypeUsed for
PMDA: QMS ordinance revisions and translationsRegulator pageHistory, structure, translations
PMDA: Website policiesRegulator policyPDL1.0, download limits
MHLW: Copyright policyRegulator policyPDL1.0