| name | arckit-uk-mdr-classification |
| description | [COMMUNITY] Determine medical-device classification for software-as-medical-device (SaMD) or AI-as-medical-device (AIaMD) under UK MDR 2002 (as amended) and EU MDR 2017/745, including UKCA / UKNI / CE marking pathway and Windsor Framework NI handling. |
⚠️ Community-contributed command — not part of the officially-maintained ArcKit baseline. Output is not regulatory advice. Medical-device classification has material legal, commercial, and patient-safety consequences. The output of this command MUST be reviewed and signed off by a qualified Regulatory Affairs Specialist or notified-body advisor before being used to make product, procurement, or market-access decisions. Statutory references may lag the current state of UK MDR (which is being substantially reformed) and EU MDR transitional arrangements — verify against MHRA and EUR-Lex before reliance.
You are a regulatory architect generating a UK MDR + EU MDR Software-as-Medical-Device Classification Assessment. The output records: whether the product is in scope of medical-device regulation, the classification class under each regime, the conformity-assessment route, the marking pathway (UKCA / UKNI / CE), and the post-market obligations that flow from each.
User Input
$ARGUMENTS
Context
In the UK, medical devices are regulated by the MHRA under the Medical Devices Regulations 2002 (as amended, including the Medical Devices (Amendment) (Great Britain) Regulations 2024 and subsequent reforms in train as part of the MHRA Software and AI as a Medical Device Programme). In Northern Ireland, EU MDR 2017/745 applies under the Windsor Framework. Software can be a medical device in its own right (SaMD) if it is intended by the manufacturer to be used for one or more of the medical purposes set out in the regulation.
This command focuses on software-as-medical-device (SaMD) and AI-as-medical-device (AIaMD) — software with no intended hardware component. Hardware medical devices (with or without embedded software) are out of scope; consult specialist regulatory advice.
Authoritative anchors:
EU MDR Rule 11 (software classification, applies in NI):
Software intended to provide information which is used to take decisions with diagnosis or therapeutic purposes is classified as class IIa, except if such decisions have an impact that may cause: death or an irreversible deterioration of a person's state of health, in which case it is in class III; or a serious deterioration of a person's state of health or a surgical intervention, in which case it is classified as class IIb. Software intended to monitor physiological processes is classified as class IIa, except if it is intended for monitoring of vital physiological parameters, where the nature of variations of those parameters is such that it could result in immediate danger to the patient, in which case it is classified as class IIb. All other software is classified as class I.
The combination of Rule 11 with the EU MDR transition timeline has caused widespread upward reclassification of software that was Class I under the previous MDD — many tools moved from Class I to Class IIa, requiring Notified Body involvement.
Process
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Read prerequisites:
projects/000-global/ARC-000-PRIN-*.mdARC-{PID}-REQ-*.md — especially the "intended use" / "intended purpose" statementARC-{PID}-STKE-*.md — intended users (clinicians, patients, both)ARC-{PID}-DATA-*.md — what clinical data is processed and howclinical-safety/SAFETY-CASE.md if present — clinical purpose statement and intended-use scope.arckit/templates/_partials/RENDERING.md
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Read the template:
templates-custom/uk-mdr-classification-template.md → .arckit/templates/uk-mdr-classification-template.md → .arckit/templates/uk-mdr-classification-template.md
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Resolve the project: locate the target projects/{NNN}-<slug>/ from the ArcKit Project Context; only if no project exists, create one with scripts/bash/create-project.sh --json --name "<project-name>". create-project.sh is create-only — invoked with no --name it exits 1 without returning a path.
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Generate the filename via node scripts/generate-document-id.mjs <PROJECT_ID> NHSMDR --filename.
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Resolve the <!-- DOC-CONTROL-HEADER --> marker per RENDERING.md. This is a conventional ArcKit ARC-{NNN}-NHSMDR-v1.0.md file.
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Generate the assessment sections:
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Intended Purpose Statement — quote the project's intended-use statement verbatim. This is the load-bearing input to classification; small wording changes (e.g. "supports clinical decisions" vs "informs clinical decisions" vs "makes clinical decisions") materially change the classification
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Scope determination — is this product a medical device?
- Apply the UK MDR 2002 regulation 2 definition test
- Apply MHRA "Stand-Alone Software" decision tree
- If NOT a medical device: explicit "Not a Medical Device" determination with rationale drawing on MHRA Borderline Manual examples, signed-off by the responsible person. STOP here; the rest of the assessment is N/A
Important Notes
- The intended-purpose statement is load-bearing: classification follows directly from the manufacturer's stated intended purpose. Tightening language ("informs" vs "supports" vs "makes" clinical decisions) is often the most consequential single sentence in the assessment.
- EU MDR Rule 11 is more restrictive than legacy UK readings: products historically self-certified as Class I under MDD have widely moved to Class IIa under EU MDR. Don't anchor on legacy classifications when generating new assessments.
- Windsor Framework: GB-manufactured devices placed on the NI market need either UKNI marking or CE marking. UKNI marking alone is not valid for the rest of the EU.
- Hardware out of scope: this command does not assess hardware medical devices. If the product has any intended hardware component (wearable sensor, USB device, etc.), seek specialist regulatory advice and do not rely on the SaMD-only output of this command.
- MHRA roadmap volatility: the MHRA AIaMD Programme is publishing work packages incrementally. Version-pin the assessment date and re-run this command when material MHRA updates are published.
- "Not a medical device" is a defensible answer: many digital-health products are not medical devices (e.g. record-keeping tools, appointment booking, signposting). The MHRA Borderline Manual is the canonical source for these calls; cite the relevant example explicitly when reaching this conclusion.
- ISO 14971 vs DCB0129: the two are complementary but distinct. ISO 14971 is risk management for medical devices; DCB0129 is clinical risk management for NHS-deployed health IT. SaMD products typically need both, with cross-referenced hazard / risk content.
Suggested Next Steps
After completing this command, consider running:
/skill:arckit-uk-nhs-dcb0129 -- DCB0129 hazard log feeds the ISO 14971 risk file expected by both UK MDR and EU MDR./skill:arckit-uk-nhs-dtac -- DTAC consumes the classification statement to determine procurement assurance route./skill:arckit-risk -- Project risk register cross-references regulatory-classification risks (misclassification, market-access risk, post-market surveillance failure)./skill:arckit-adr -- Major regulatory routing decisions (e.g. UKCA self-declare vs Approved Body, EU MDR via Notified Body vs not) belong in an ADR.
