Sydney 06, FEB 2026 — The evolution of digital health continues to blur the lines between general software and regulated medical devices. A key reference for navigating this landscape in Australia is the Therapeutic Goods Administration (TGA) guidance, which received a significant update: “Understanding clinical decision support system software regulation“. The updated document clarifies when Clinical Decision Support software (CDSS) is exempt from inclusion in the Australian Register of Therapeutic Goods (ARTG) and when it must be fully regulated. Compared to previous versions, the 2026 update provides critical clarifications on the distinction between “Excluded” and “Exempt” software, and explicitly addresses the regulatory status of Artificial Intelligence (AI) and “black box” systems.
WHAT IS CLINICAL DECISION SUPPORT SYSTEM (CDSS) SOFTWARE?
CDSS is software that performs a broad range of functions to enable and support clinical practice. It can be any kind of software, including mobile apps, cloud-based SaaS, or browser-delivered products. Examples: range from web-based applications providing information on diseases based on symptoms, to software analyzing X-ray images to assist radiologists. However, CDSS that meet the definition of a medical device must be included in the Australian register of therapeutic goods (ARTG) unless it qualifies for a specific exemption.
EXEMPT CLINICAL DECISION SUPPORT SYSTEMS: THREE STATUTORY CRITERIA
Under the updated guidance, some CDSS software is exempt from inclusion in the Australian register of therapeutic goods (ARTG) (though it remains a medical device subject to other oversight). To qualify, the software must meet all three of the following exemption criteria simultaneously:
- Sole Purpose of Recommendation The software must be intended only to provide or support a recommendation to a health professional about preventing, diagnosing, curing, or alleviating a disease. It cannot make the decision itself, determining a treatment, or override a clinician’s judgment.
- No Direct Processing of Medical Images or Signals The software must not directly process or analyze medical images (e.g., X-rays, MRIs) or signals from other medical devices (e.g., ECGs, glucose sensors).
- Support for, Not Replacement of, Clinical Judgment The software must not replace the clinical judgment of a health professional. Crucially, this means the software must be transparent; it cannot use proprietary analysis or AI where the logic is hidden. The health professional must be able to independently verify the basis of the recommendation.
WHEN SOFTWARE IS NOT EXEMPT (THE "BLACK BOX" RULE)
The 29 January 2026 update draws a hard line regarding Artificial Intelligence.
- AI and “Black Box” Systems: The guidance confirms that AI-enabled clinical decision support systems (often referred to as “opaque” or “black box” models) cannot be exempt. If the internal logic is not visible or verifiable by the clinician, it does not meet Exemption Criterion (C) and must be included in the Australian register of therapeutic goods (ARTG).
- Image & Signal Analysis: Software that analyzes results or images (like X-rays) to generate diagnostic outputs is unlikely to meet exemption criteria and must be regulated.
- Patient Monitoring: Software used for patient monitoring (e.g., flagging sepsis based on thresholds) does not qualify for exemption.
CONCLUSIONS
As outlined in the 2026 update, the distinction between “Excluded” (unregulated) and “Exempt” (regulated but not in Australian register of therapeutic goods) is now clearer. For manufacturers, transparency is paramount: if your software uses opaque algorithms, it cannot be exempt. Furthermore, the Therapeutic Goods Administration (TGA) warns that regulatory status is not static, if you update your product, you must reassess whether it still meets exemption criteria. Even exempt software carries obligations: Sponsors must notify the TGA within 30 working days of supply, report adverse events, and comply with Essential Principles for safety and performance.
SOURCE: Understanding clinical decision support system software regulation | Therapeutic Goods Administration (TGA)