Table 1 ICD-9 and ICD-10 Codes used for classification

Chronic Obstructive Pulmonary Disease (COPD)

491.X, 492.X, 496.X

J41.X, J42.X, J43.X, J44.X

Respiratory-related Conditions

460.X, 461.X, 462.X, 463.X, 464.X, 465.X, 466.X, 470.X, 471.X, 472.X, 473.X, 474.X, 475.X, 476.X, 477.X, 478.X, 480.X, 481.X, 482.X, 483.X, 484.X, 485.X, 486.X, 487.X, 488.X, 490.X, 491.X, 492.X, 493.X, 494.X, 495.X, 496.X, 500.X, 501.X, 502.X, 503.X, 504.X, 505.X, 506.X, 507.X, 508.X, 510.X, 511.X, 512.X, 513.X, 514.X, 515.X, 516.X, 517.X, 518.X, 519.X

J0.X, J1.X, J2.X, J3.X, J4.X, J5.X, J6.X, J7.X, J8.X, J9.X

Cardiovascular-related conditions

401.X, 402.X, 403.X, 404.X, 405.X, 410.X, 411.X, 412.X, 413.X, 414.X, 415.X, 416.X, 417.X, 420.X, 421.X, 422.X, 423.X, 424.X, 425.X, 426.X, 427.X, 428.X, 429.X

I1.X, I2.X, I3.X, I4.X, I5.X