ICD-9 codes 433.X1, 434, and V12.54 demonstrated high PPVs for identifying confirmed cerebral events across care settings. Codes recorded in both inpatient and outpatient settings had higher PPVs but ...

Diabetes included both type I and type II and was defined as any occurrence of International Classification of Diseases, Ninth Edition (ICD-9) diagnosis codes 250.xx, 357.2, 362.0x, or 366.41; ...

Objectives: We sought to determine which ICD-9-CM codes in Medicare Part A data identify cardiovascular and stroke risk factors. Design and Participants: This was a cross-sectional study comparing ICD ...

Health care utilization patterns for gender minority Medicare beneficiaries (those who are transgender or gender nonbinary people) are largely unknown. We identified gender minority beneficiaries ...