| R00 | Abnormalities of heart beat | NON-BILLABLE CODE |
| R00.0 | Tachycardia, unspecified | BILLABLE CODE |
| R00.1 | Bradycardia, unspecified | BILLABLE CODE |
| R00.8 | Other abnormalities of heart beat | BILLABLE CODE |
| R00.9 | Unspecified abnormalities of heart beat | BILLABLE CODE |
