TY - JOUR AU - Nimptsch, U TI - Disease-Specific Trends of Comorbidity Coding and Implications for Risk Adjustment in Hospital Administrative Data JO - Health Services Research VL - 51 PY - 2016 DO - 10.1111/1475-6773.12398 L3 - PubMed-ID: 26741707 SP - 981 EP - 1001 ER -