藥師在介入臨床藥事服務時能將介入活動作成文件記錄，對促進病人用藥安全，甚至藥費的節省以及做為日後藥事服務成效分析皆有相當大的助益。故而適當的藥物相關問題分類系統對於藥事照護之日常工作與研究而言是很重要的工具。
本文將引介目前在研究及文章發表上常被引用且定期改版驗證的PCNE drug-related problems分類系統，並回顧歷年修訂內容與現行版本之異同，以提供醫院藥師於臨床服務應用之參考。
 

The implementation of clinical pharmaceutical care and documentation of the intervention activities done by pharmacist not only improve the drug safety and cost effectiveness, but have considerable help on the pharmaceutical care services analysis. Therefore, it is important to have an appropriate drug-related problems classification instrument for the quality improvement of pharmaceutical care process and clinical research.
This article will introduce a regularly revised and verified classification system -- the PCNE drug-related problems classification, which has been applied in pharmacy practice and research. Moreover, the difference among current and previous versions will be reviewed to provide hospital pharmacists the opportunity to introduce the system into clinical practices.