Where used:
| Class | MAIN SPECIALTY | references in description MAIN SPECIALTY CODE |
| Data Element | MAIN SPECIALTY CODE (AUGMENTED CARE PERIOD) | references in description MAIN SPECIALTY CODE |
| Data Element | MAIN SPECIALTY CODE (MENTAL HEALTH) | references in description MAIN SPECIALTY CODE |
| Data Element | TREATMENT FUNCTION CODE | references in description MAIN SPECIALTY CODE |
| Supporting Information | Main Specialty And Treatment Function Codes | references in description MAIN SPECIALTY CODE |