| R63 | Symptoms and signs concerning food and fluid intake | NON-BILLABLE CODE |
| R63.0 | Anorexia | BILLABLE CODE |
| R63.1 | Polydipsia | BILLABLE CODE |
| R63.2 | Polyphagia | BILLABLE CODE |
| R63.3 | Feeding difficulties | NON-BILLABLE CODE |
| R63.30 | Feeding difficulties, unspecified | BILLABLE CODE |
| R63.31 | Pediatric feeding disorder, acute | BILLABLE CODE |
| R63.32 | Pediatric feeding disorder, chronic | BILLABLE CODE |
| R63.39 | Other feeding difficulties | BILLABLE CODE |
| R63.4 | Abnormal weight loss | BILLABLE CODE |
| R63.5 | Abnormal weight gain | BILLABLE CODE |
| R63.6 | Underweight | BILLABLE CODE |
