Repeated X-rays, duplicate lab tests, and preliminary examinations performed twice: Duplicate findings in the preoperative process usually do not arise because a repeat examination is medically necessary, but because existing medical history and test data are lost during the transition between the doctor\u2019s office, the outpatient clinic, and the hospital ward, are incomplete, or are not available in a timely manner. For hospitals, this means double the staff and equipment time; for health insurance companies, it means duplicate billing for the same medical issue. A structured digital medical history closes precisely this information gap before it leads to unnecessary diagnostic testing. <\/p>\n\n
A duplicate test occurs when a diagnostic test is performed again even though a conclusive result for the same issue is already available. During the preoperative process\u2014from referral by the primary care practice through the premedication clinic to the ward\u2014the patient\u2019s care transitions between different units multiple times. Information can be lost at each of these transitions: The previous findings are available only on paper, were not fully transferred to the medical record, or simply cannot be located at the time of the examination. The treating physician then decides, out of a duty of care, to perform the examination again\u2014not out of carelessness, but because reliable information is lacking. <\/p>\n\n
Reliable, disaggregated cost figures specifically for duplicate diagnoses are rare in Germany and Austria\u2014health insurance providers do not track them as a separate category, and relevant inquiries to statutory health insurers regarding exact case numbers generally go unanswered. However, the scale of the underlying process inefficiency can be put into perspective: A frequently cited McKinsey analysis estimated the total annual savings potential of digital health technologies in Germany at around 34 billion euros, which corresponds to approximately 12% of healthcare spending at the time. This is not a figure specific to duplicate test results, but it does indicate the scale of the impact of information loss and redundant work in the healthcare system. <\/p>\n\n
The problem can be illustrated more concretely using X-ray diagnostics: According to BARMER, every resident in Germany undergoes, on average, 1.7 X-ray examinations per year, and the number of CT scans increased by about 40% between 2014 and 2017. The X-ray record was explicitly introduced so that doctors can determine whether a comparable image already exists\u2014an acknowledgment that the lack of an overview of previous findings is a structural problem, not merely an anecdotal one. <\/p>\n\n
The joint recommendation on preoperative evaluation, updated in 2024 by the German Society of Anesthesiology and Intensive Care Medicine (DGAI), the German Society of Surgery (DGCH), and the German Society of Internal Medicine (DGIM), is clear on this point: Routine laboratory screening should not be performed. Further investigations\u2014laboratory tests, ECG, imaging\u2014are indicated only if the medical history and physical examination provide concrete evidence that actually influences the perioperative management. The guideline<\/a> thus explicitly makes a comprehensive, structured medical history a prerequisite for being able to forgo additional diagnostics\u2014not merely an option, but the professional basis for the decision. <\/p>\n\n