The transition from the International Classification of Diseases, Ninth Revision (ICD-9) to the Tenth Revision (ICD-10) in 2015 improved characterization of procedural details.¹ For example, coronary artery bypass grafting (CABG) was described by only 10 ICD-9 codes, whereas more than 200 CABG-associated ICD-10 codes are now available. Comparison of Current Procedural Terminology (CPT) codes, which did not change in 2015, with ICD-9 codes describing the same CABG procedure may provide useful context to understand the transition from ICD-9 to ICD-10. We developed an algorithm to determine procedural details of CABG documented by ICD-9 and ICD-10 and CPT codes and then applied the algorithm to Medicare beneficiaries undergoing CABG in 2015 to evaluate for changes in coding patterns.

2015 年从国际疾病分类第九版( ICD-9 ) 到第十版( ICD-10 ) 的过渡改进了程序细节的表征。¹例如，冠状动脉旁路移植术 (CABG) 仅由 10 个ICD-9代码描述，而现在有超过 200 个与 CABG 相关的ICD-10代码可用。将 2015 年未更改的当前程序术语( CPT ) 代码与描述相同 CABG 程序的ICD-9代码进行比较，可以为理解从ICD-9过渡到ICD-10。我们开发了一种算法来确定由ICD-9和ICD-10以及CPT代码记录的 CABG 的程序细节，然后将该算法应用于 2015 年接受 CABG 的医疗保险受益人，以评估编码模式的变化。