| 0 | No product selection indicated |
| 1 | Substitution not allowed by prescriber |
| 2 | Substitution allowed - patient requested product dispensed |
| 3 | Substitution allowed - pharmacist selected product dispensed |
| 4 | Substitution allowed - generic drug not in stock |
| 5 | Substitution allowed - brand drug dispensed as a generic |
| 7 | Substitution not allowed - brand drug mandated by law |
| 8 | Substitution allowed - generic drug not available in marketplace |
| G | A generic substitution was dispensed. |
| N | No substitute was dispensed. This is equivalent to the default (null) value. |
| T | A therapeutic substitution was dispensed. |