Compliance & Regulation

QMSR: FDA replaced 21 CFR Part 820 with ISO 13485, and what it means for cybersecurity

The FDA's Quality Management System Regulation took effect, replacing 21 CFR Part 820 with alignment to ISO 13485:2016. It is a real shift in quality-system requirements. It does not fundamentally change your cybersecurity obligations.

The updated Premarket Cybersecurity Guidance reflects the transition with mostly administrative changes: new definitions for terms like TPLC and risk transfer, expanded glossary entries, and updated cross-references to ISO 13485. The cybersecurity bar did not move.

What changed• 21 CFR 820 to ISO 13485 alignment• New TPLC and risk-transfer terms• Updated cross-references• Global harmonization stepWhat did not• Vulnerability testing duty• Postmarket surveillance• Evidence and traceability• Defensible dispositions
QMSR is a terminology and structure change, not a cybersecurity change.
Treat QMSR as an opportunity to make your documentation terminology consistent, while keeping the same level of cybersecurity diligence.

If your vulnerability program was defensible last year, it is defensible under QMSR. The work now is aligning language, not rebuilding the security case.

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Questions

Common questions about QMSR.

What did FDA's QMSR change?

The FDA's Quality Management System Regulation took effect and replaced 21 CFR Part 820 with alignment to ISO 13485:2016. It is a real shift in quality-system requirements. It is not a shift in what a cybersecurity program has to demonstrate, and the cybersecurity bar did not move with it.

Does QMSR change medical device cybersecurity requirements?

No. The updated Premarket Cybersecurity Guidance reflects the transition with mostly administrative changes: new definitions for terms like TPLC and risk transfer, expanded glossary entries, and updated cross-references to ISO 13485. QMSR is a terminology and structure change rather than a cybersecurity change.

Does a vulnerability management program need rebuilding for QMSR?

No. If your vulnerability program was defensible last year, it is defensible under QMSR. Existing threat models, risk assessments, testing evidence and postmarket monitoring records carry over intact. The transition changes how quality-system requirements are structured and worded, not what the security case has to prove.

What should manufacturers actually do about QMSR?

Treat QMSR as an opportunity to make documentation terminology consistent while keeping the same level of cybersecurity diligence. Update cross-references and vocabulary so the language matches ISO 13485. The work now is aligning language, not rebuilding the security case.

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