Table 2.
Patients with HCM-related diagnostic codes who were misclassified
| Misclassified as HCM | Misclassified (n=41), n (%) | Cohort (n=129), n (%) |
|---|---|---|
| Hypertension | 13 (31.7) | 10.1 |
| Aortic stenosis | 9 (22.0) | 7.0 |
| Amyloidosis | 4 (9.8) | 3.1 |
| Dilated CM, nonischemic | 4 (9.8) | 3.1 |
| Dilated CM, ischemic | 2 (4.9) | 1.6 |
| Left ventricular noncompaction CM | 1 (2.4) | 0.8 |
| Takotsubo CM | 1 (2.4) | 0.8 |
| Aortic insufficiency | 2 (4.9) | 1.6 |
| Myocardial infarction | 2 (4.9) | 1.6 |
| Pulmonary stenosis, VSD | 1 (2.4) | 0.8 |
| Atrioventricular block, third degree | 1 (2.4) | 0.8 |
| Athlete’s heart | 1 (2.4) | 0.8 |
Abbreviations: CM, cardiomyopathy; HCM, hypertrophic cardiomyopathy; VSD, ventricular septal defect.