Plain meaning
Computerized system validation, or CSV, establishes and maintains evidence that a computerized system is suitable for its intended use. Computer software assurance, or CSA, emphasizes confidence in the software’s use through risk-informed assurance activities. In practice, the terminology matters less than the quality of the reasoning and evidence.
FDA’s February 2026 CSA guidance concerns software used in medical-device production and quality management systems. It is a guidance document with recommendations, not a universal replacement for every computerized-system obligation across all regulated sectors. FDA CSA guidance ↗
What a useful change looks like
Imagine a team writing 150 step-by-step scripts for an eQMS release. Many scripts repeat simple screen navigation. Meanwhile, none tests whether a rejected CAPA can bypass reapproval through an interface.
The improvement is to investigate the process risk and strengthen that missing challenge. Some navigation checks might be combined, automated, or supported by suitable existing evidence. The purpose is better confidence in the workflow, with records proportionate to the decision.
Three examples
Document library search. A user searches for a procedure. If the system can return obsolete documents as current, the important test is version and effective-status behavior. Testing only whether the search box accepts text misses the process concern.
Production acceptance calculation. Software determines whether measurements satisfy a product specification. The team needs confidence in the input units, formula, limits, rounding, and decision output. A polished test report cannot compensate for an incorrect independent expected value.
Internal announcement page. Software displays an office event. Its failure has a different relationship to quality than a product acceptance decision. Check the actual use before assigning a regulated-process assurance burden.
What does not disappear
The team still needs an accountable owner, an understood process, suitable controls, an explanation of relevant risks, trustworthy evidence, and a decision about use. Changes and incidents still need attention. “We use CSA” is not a rationale for missing records or unsupported assumptions.
A better project conversation
Instead of asking, “How many scripts are required?” ask:
- What decision or action will this function support?
- What failure could affect the process?
- What prevents or detects that failure?
- What evidence already supports those controls?
- What uncertainty remains, and how will we address it?
Example record wording: “The test approach concentrates detailed challenges on acceptance calculations and status changes. Standard navigation uses reviewed supplier evidence plus local exploratory checks. This selection reflects the defined failures, local configuration, and evidence gaps; it is not based solely on a system-wide risk label.”