Data trends. Tracking coding practices under APCs.
D000553:Ambulatory Care / Q000145:classification* / Q000191:economics; D003625:Data Collection; D003953:Diagnosis-Related Groups / Q000145:classification; D004636:Emergency Service, Hospital / Q000191:economics / Q000706:statistics & numerical data*; D005568:Forms and Records Control; D006801:Humans; D014481:United States