Background This study describes rates of non-fatal fall-injury emergency department (ED) visits and hospitalisations before and after the US 2015 transition from the 9th to 10th revision of the International Classification of Diseases, Clinical Modification (ICD-9-CM to ICD-10-CM). Methods ED visit and hospitalisation data for adults aged 65+ years were obtained from the 2010–2016 Healthcare Cost and Utilisation Project. Differences in fall injury rates between 2010 and 2014 (before transition), and 2014 and 2016 (before and after transition) were analysed using t-tests. Results For ED visits, rates did not differ significantly between 2014 and 2016 (4288 vs 4318 per 100 000, respectively). Hospitalisation rates were lower in 2014 (1232 per 100 000) compared with 2016 (1281 per 100 000). Conclusion Increased rates of fall-related hospitalisations could be an artefact of the transition or may reflect an increase in the rate of fall-related hospitalisations. Analyses of fall-related hospitalisations across the transition should be interpreted cautiously.

中文翻译：

---

2010-2014 和 2016 年老年人跌倒相关伤害导致的全国非致命急诊就诊率和住院率：从 ICD-9-CM 过渡到 ICD-10-CM

背景 本研究描述了美国 2015 年从国际疾病分类临床修订版（ICD-9-CM 到 ICD -10-CM）。方法 65 岁以上成人的急诊就诊和住院数据来自 2010-2016 年医疗保健成本和利用项目。使用 t 检验分析了 2010 年和 2014 年（过渡前）以及 2014 年和 2016 年（过渡前和过渡后）之间坠落伤害率的差异。结果 对于急诊就诊率，2014 年和 2016 年之间的比率没有显着差异（分别为每 10 万人 4288 人和 4318 人）。2014 年的住院率（每 10 万人 1232 人）低于 2016 年（每 10 万人 1281 人）。结论 与跌倒相关的住院率增加可能是过渡的产物，或者可能反映了与跌倒相关的住院率的增加。应谨慎解释过渡期间与跌倒相关的住院分析。