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February 17, 2026

Approximately 5 minutes

Classification Rules for Medical Devices and IVDs in Norway

Classification Rules for Medical Devices and IVDs in Norway

Classification of medical devices follows Annex VIII of Regulation (EU) 2017/745 (MDR). In vitro diagnostic medical devices follow Annex VIII of Regulation (EU) 2017/746 (IVDR). Norway implements these EU regulations directly through the EEA Agreement. https://www.dmp.no/en/medical-devices/development-and-manufacturing/qualification-and-classification/classification-of-medical-devices

2. MDR Classification Rules

Medical devices are divided into four risk classes: Class I (lowest), IIa, IIb and III (highest). Classification is determined by 22 rules in Annex VIII covering non-invasive devices, invasive devices (through body orifices or surgically), active devices, and special rules for devices incorporating medicinal substances, animal tissues, or absorbed by the body. https://www.dmp.no/en/medical-devices/development-and-manufacturing/qualification-and-classification/classification-of-medical-devices

3. IVDR Classification Rules

IVDs are classified into four risk classes: Class A (lowest), B, C and D (highest). The 7 rules in Annex VIII consider intended use and the risk to the individual patient and public health. Examples include Class D for high public health risk (e.g., HIV, HBV, blood grouping) and Class A for low risk (e.g., general laboratory reagents). https://www.dmp.no/en/medical-devices/development-and-manufacturing/qualification-and-classification/classification-of-medical-devices

4. Manufacturer Responsibility

The manufacturer is solely responsible for correctly classifying the device based on its intended purpose and must justify the decision in the technical documentation. https://www.dmp.no/en/medical-devices/development-and-manufacturing/qualification-and-classification/classification-of-medical-devices

5. Role of Notified Bodies

Notified bodies verify classification during conformity assessment for Class IIa, IIb and III devices (and certain Class I sterile/measuring devices). Most Class I devices are self-certified. https://www.dmp.no/en/medical-devices/development-and-manufacturing/qualification-and-classification/classification-of-medical-devices

6. NoMA Guidance and Advice

The Norwegian Medicines Agency (NoMA) issues national guidance on classification rules and may provide non-binding classification opinions upon request. Manufacturers should refer to MDCG guidance documents for consistent EEA-wide interpretation. https://www.dmp.no/en/medical-devices/development-and-manufacturing/qualification-and-classification/classification-of-medical-devices

7. Practical Implications

Correct classification determines the conformity assessment route, CE marking requirements, post-market surveillance obligations and vigilance reporting. Misclassification can lead to enforcement actions by NoMA. https://www.dmp.no/en/medical-devices/development-and-manufacturing/qualification-and-classification/classification-of-medical-devices

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