Table 1.
ICD‐9‐CM and ICD‐10‐CM Codes Used to Define the Comorbidities and Clinical Outcome in the Study Cohort
| Disease | ICD‐9 Codes | ICD‐10 Codes | Diagnosis Definition |
|---|---|---|---|
| Atrial fibrillation | 427.31 | I48 | Discharge or outpatient department ≥2 |
| Ischemic stroke | 433, 434, 436 | I63, I64 | Discharge |
| Transient ischemic attack | 435 | G45 | Discharge |
| Peripheral arterial occlusive disease | 440.2 | I70.2–I70.9, I71; I73.9 | Discharge |
| Myocardial infarction | 410, 411, 412 | I21–I25 | Discharge |
| Congestive heart failure | 428 | I11.0, I13.0, I13.2, I42.0, I50, I50.1, I50.9 | Discharge |
| Hypertension | 401, 402 | I10–I16 | Outpatient department ≥2 |
| Diabetes mellitus | 250 | E10.0, E10.1, E10.9, E11.0, E11.1, E11.9 | Outpatient department ≥2 |
| Hyperlipidemia | 272 | E78 | Outpatient department ≥2 |
| Chronic gout | 274.0, 274.10, 274.11, 274.19, 274.81, 274.82, 274.89, 274.9 | M10, M1A | Outpatient department ≥2 |
| Chronic lung disease | 490, 491.0, 491.1, 491.20–491.22, 491.8, 491.9, 492.0, 492.8, 493.00–493.02 493.10–493.12, 493.20–493.22, 493.81, 493.82, 493.90–493.92, 494.0, 494.1, 495.8, 495.9, 496, 500, 502, 503, 504, 505, A323, A325 | J44 | Discharge |
| Chronic kidney disease | 580–589 | I12, I13, N00, N01, N02, N03, N04, N05, N07, N11, N14, N17, N18, N19, Q61 | Outpatient department ≥2 |
| Chronic liver disease | 570, 571, 572 | B150, B160, B162, B190, K704, K72, K766, I85 | Outpatient department ≥2 |
| Malignancy | 140.0–208.9 | C | Outpatient department ≥2 |
| Intracranial hemorrhage | 430, 431, 432, 852, 853 | I60, I61, I62 | Discharge |
| Gastrointestinal bleeding | 456.0, 456.2, 455.2, 455.5, 455.8, 530.7, 530.82, 531.0–531.6, 532.0–532.6, 533.0–533.6, 534.0–534.6, 535.0–535.6 537.83, 562.02, 562.03, 562.12 562.13 568.81, 569.3, 569.85, 578.0, 578.1, 578.9 | K250, K260, K270, K280, K290 | Discharge |
| Other critical site bleeding | 423,0, 459.0, 568.81, 593.81, 599.7, 623.8, 626.32, 626.6, 719.1, 784.7, 784.8, 786.3 | D62, J942, H113, H356, H431, N02, N95, R04, R31, R58 | Discharge |
ICD‐9‐CM indicates International Classification of Disease, 9th Edition, Clinical Modification; ICD‐10‐CM, International Classification of Disease, 10th Edition, Clinical Modification.