Table 1 ICD-9 diagnostic codes and assigned categories used to identify comorbidities
Diagnostic category | ICD-9 codes |
|---|---|
Arterial dissection | 443.21–443.29 |
Atherosclerosis | 440 |
Benign neoplasm | 210.00–229.9, 238.8, 238.9 |
Cerebral thrombosis | 434, 434.01, 434.1, 437.1 |
Cerebrovascular disease | 434.11, 434.91, 435.8, 435.9, 436, 437, 437.0A, 437.4, 437.6–437.9 |
Coronary stenosis | 411.81, 414.00–414.9 |
Cranial artery stenosis | 433–433.9, 434.9, 435–435.3 |
Hypertension | 401.0–405.99 |
Intracranial aneurysm | 430, 437.3 |
Intracranial hemorrhage | 431, 432.1, 432.9 |
Kidney disease | 585.3–585.9, 586 |
Malignant neoplasm | 140.00–209.6, 230.00–234.9, 235.1–238.3 |
Myelogenous neoplasm | 200–208.9, 238.4–238.7, 238.71–238.73, 238.75, 238.76, 238.79, 272.2 |
Peripheral artery disease | 440.21, 440.22, 440.3, 440.31, 440.32, 443.9 |
Pulmonary disease | 491.00–492.8, 493.2, 496, 518.1 |
Type 1 diabetes | 250.01, 250.03, 250.11, 250.13, 250.2, 250.23, 250.41, 250.43, 250.51, 250.53, 250.61, 250.63, 250.71, 250.73, 250.81, 250.83, 250.93 |
Type 2 diabetes | 250.00, 250.02, 250.1, 250.12, 250.22, 250.4, 250.42, 250.5, 250.52, 250.6, 250.62, 250.7, 250.72, 250.8, 250.82, 250.9, 250.92 |