What constitutes a medication error according to the National Coordinating Council?

The correct choice identifies a medication error as any preventable event that leads to inappropriate medication use or harm. This definition encompasses a broad range of mistakes that can occur during the prescribing, dispensing, or administration of medication. It underscores the importance of recognizing that errors can arise from various stages in the medication use process and emphasizes the potential consequences for patient safety.

By defining medication errors in this manner, the National Coordinating Council highlights the need for systemic changes and safeguards to prevent such events. This definition encourages healthcare providers to adopt comprehensive strategies for error prevention, education, and communication to enhance patient care.

The other options do not capture the full scope of what constitutes a medication error. Adverse reactions are not necessarily preventable events and might occur even with correct medication use. Delays in medication administration may not ultimately result in harm, and errors made solely during the dispensing process represent just a fraction of potential medication errors. Therefore, option B provides the most inclusive and relevant definition.