ivd consulting services - regulatory consultant medical devices

Understanding the MDCG 2023-4 Guidance on Medical Device Software and Hardware Combinations

October 20, 2023

The world of medical device regulation is constantly evolving, with regulatory bodies introducing new guidances to keep up with the technological advances in the sector. One such pivotal guidance is the MDCG 2023-4, focusing on Medical Device Software (MDSW) intended to work in combination with hardware or hardware components.

What is MDCG 2023-4?

The Medical Device Coordination Group (MDCG) released the guidance MDCG 2023-4. This document provides detailed insights into the considerations and regulatory requirements for MDSW that is intended to be used in combination with hardware or its components.

Key Highlights of MDCG 2023-4

1. The Prominence of Hardware in MDSW

For many MDSW, hardware components directly link their effectiveness by feeding them with necessary data. Devices such as wearables, smartwatches, or augmented reality goggles utilize sensors and cameras to collect data. This data is then processed by MDSW applications for medical outcomes.

In some cases, these hardware components are crucial to general consumer electronics, emphasizing the importance of convergence between MDSW and hardware. Especially with integrated sensors, understanding their qualification and the suitable regulatory pathways becomes essential.

2. Regulatory Scope of MDCG 2023-4

Hardware components significantly contribute to the medical functionality of specific MDSW through data and signals. Understanding the regulatory implications when combining MDSW with associated hardware is essential. This guidance sheds light on the regulatory considerations for hardware components when they either function as medical devices or their accessories. However, it’s crucial to note that areas like clinical evaluation or cybersecurity are not covered by this guidance.

3. MDSW-Hardware Synergy

The medical intent of numerous MDSW apps is closely tied to the data from the associated hardware. This hardware serves as data input sources and occasionally even controls the MDSW. For optimal functionality, the hardware must guarantee precision, reliability, and performance. There are various scenarios, such as:

  • A single manufacturer producing both a dermal patch with sensors and a corresponding MDSW app.
  • A wearable device, like a watch with sensors, requiring a user to download a corresponding MDSW app from the same manufacturer.

However, situations where the hardware and MDSW app manufacturers differ introduce complex interoperability considerations.

4. Regulatory Considerations

As per MDR’s Article 2 and MDCG 2023-4, a medical device’s purpose can either be achieved independently or in conjunction with other devices or accessories. From the scenarios provided, it’s evident that the MDSW and hardware components are interdependent for medical functionality. If a manufacturer claims a medical purpose for the software, they need to provide evidence of compliance with the MDR, ensuring that the interaction between the MDSW and hardware produces safe and effective results.

5. Market Placement

For the initial scenarios, where both the MDSW and hardware are categorized as medical devices or their accessories, MDR compliance is crucial, focusing on safety, interoperability, and performance. This involves comprehensive clinical evaluations and post-market surveillance. However, if the hardware isn’t MDR compliant, the responsibility of ensuring safety and performance lies with the MDSW manufacturer.

Frequently Asked Questions (FAQ)

  • Is the MDCG 2023-4 guidance binding for manufacturers? The guidance offers insights and best practices. However, always consult with specific regulatory authorities for mandatory requirements.
  • Does this guidance apply to software-only medical devices? The primary focus is on software working with hardware. Some sections might still be relevant for software-only devices in terms of risk management.
  • What penalties are in place for non-compliance? Penalties vary based on regional regulations. It’s essential to stay updated with regional medical device regulatory guidelines.


The MDCG 2023-4 guidance is a significant step in clarifying the regulatory framework for medical device software and hardware combinations. Adhering to the guidance ensures innovations in the field are both groundbreaking and compliant, safeguarding patient welfare. Stakeholders and manufacturers are encouraged to familiarize themselves with the MDCG 2023-4 document to stay ahead in the ever-evolving medical device industry.

Fondo Social Europeo dentro de la Ayuda a la Recuperación para la Cohesión y los Territorios de Europa (REACT-UE)

MED IVD HEALTHTECH S.L ha sido beneficiaria de la subvención de contratos de trabajo de la Comunidad de Madrid, cofinanciado por el Fondo Social Europeo dentro de la Ayuda a la Recuperación para la Cohesión y los Territorios de Europa (REACT-UE), a través del Programa Operativo Regional FSE, en el marco del Programa Impulso a la Contratación Estable de Jóvenes para la Recuperación Económica, gestionado por la Dirección General del Servicio Público de empleo de la Consejería de Economía, hacienda y empleo de la Comunidad de Madrid.

© 2024 Copyright MDx | MedTech IVD CRO.

MDx | MedTech IVD CRO

Dark mode is activated. Turn off