Table 1.
ICD-9 codes for conditions included in this study.
| Diagnosis | ICD9 codes |
|---|---|
| Calcium Pyrophosphate | 275.49, 712.1–712.39 |
| Deposition disease | |
| Osteoarthritis | 715.XX |
| Hyperparathyroidism | 252.0–25208 |
| Hemochromatosis | 275.0–275.09 |
| Hypothyroidism | 244.xx |
| Hypomagnesemia | 275.2 |
| Diabetes Mellitus | 249.xx, 250.xx |
| Chronic Kidney Disease | 585.1–585.9 |
| Gout | 274.xx (excluding 274.11) |
| Rheumatoid Arthritis | 714.0–714.4 |
| Alcohol Abuse | 303.90–303.93 |
| Tobacco Abuse | 305.1, V15.82 |
| Coronary artery disease | 414.xx |
| Congestive Heart Failure | 428.xx |
| Hip Arthroplasty | V43.64 |
| Knee Arthroplasty | V43.65 |
| Shoulder Arthroplasty | V43.61 |
| Wilsons | 275.1 |
| Osteoporosis | 733.00–733.09 |
| Hypertension | 401.0–401.9 |