| R62 | Lack of expected normal physiological development in childhood and adults | NON-BILLABLE CODE |
| R62.0 | Delayed milestone in childhood | BILLABLE CODE |
| R62.5 | Other and unspecified lack of expected normal physiological development in childhood | NON-BILLABLE CODE |
| R62.50 | Unspecified lack of expected normal physiological development in childhood | BILLABLE CODE |
| R62.51 | Failure to thrive (child) | BILLABLE CODE |
| R62.59 | Other lack of expected normal physiological development in childhood | BILLABLE CODE |
| R62.7 | Adult failure to thrive | BILLABLE CODE |
