Patient safety means reducing the risk of preventable harm associated with health care and responding when something goes wrong. A healthcare error is not automatically the same as patient harm: some errors are intercepted before reaching a patient, and an adverse outcome does not by itself prove that an error occurred. Clear definitions help teams investigate events fairly and learn what can make care safer.
Common types of healthcare errors and safety events
Safety problems can arise across settings and at different points in care. Examples include:
- Medication-related events: a prescribing, dispensing, administration, or monitoring problem involving a medicine.
- Diagnostic problems: a missed, delayed, or incorrect diagnosis, or a delay in communicating or acting on a result.
- Communication and handoff failures: important information is incomplete, misunderstood, or not transferred to the person responsible for the next step.
- Patient-identification mismatches: information, a specimen, medication, or service is linked to the wrong person.
- Procedure and infection-prevention events: a breakdown in planning, verification, sterile technique, or follow-up that may expose a patient to avoidable risk.
- Falls and other care-related injuries: a patient is harmed during care or while a known risk is not adequately addressed.
These are examples, not a ranking. Which events occur and how they are classified depends on the setting, reporting rules, and facts of the case.
Why errors happen: look at the work system
Health care involves complex tasks, handoffs, technologies, time pressures, and changing patient needs. A systems approach asks how those conditions shaped an event—not only who was closest to it. Contributing factors may include unclear procedures, confusing screen design, interruptions, staffing or workload pressures, incomplete information, equipment issues, or a process that makes the safe action difficult.
This does not remove individual accountability. It helps an organization choose a response that addresses both the specific actions and the conditions around them. AHRQ’s PSNet systems-approach guidance emphasizes identifying risks in the design of care and changing systems to reduce the chance of recurrence or limit the impact of errors.
What a care team can do after a safety event
- Address immediate safety needs. Follow clinical escalation procedures and make sure the patient receives appropriate evaluation and care.
- Preserve and report relevant information. Use the organization’s reporting process for events and near misses. Record factual details, timing, and known actions according to policy.
- Review the process with the right people. Involve staff familiar with the work, relevant clinical and operational leaders, and patient-safety expertise. Consider handoffs, tools, workload, training, and policies.
- Choose an improvement that addresses a contributing factor. Examples may include simplifying a confusing step, improving a handoff, clarifying responsibility for test results, or changing how identity is verified. Match the action to the specific event rather than applying a generic fix.
- Measure whether the change helps. Track whether the new process is being used, whether the intended safety outcome changes, and whether there are unintended effects elsewhere.
- Communicate and learn. Follow applicable disclosure, documentation, and reporting requirements. Share lessons through the organization’s safety processes while protecting patient privacy.
