While clinical decision support systems can help reduce inappropriate vitamin D testing by guiding clinicians to order tests based on approved indications or diagnoses, there are potential unintended consequences associated with their implementation. One possible consequence is the risk of overlooking cases where vitamin D testing may be warranted but does not fit within the predefined criteria, leading to missed opportunities for diagnosis and treatment. Additionally, clinicians may become overly reliant on the decision support system, potentially diminishing their clinical judgment and critical thinking skills. There is also a concern that the rigid criteria set by the system may not always align with individual patient needs or evolving evidence, resulting in underutilization or overutilization of vitamin D testing in certain scenarios.