No, it is dependent on the CPT code billed initially. Casting does not have a global. However, if the provider intended to place the patient in fracture care, and charged a fracture care global code the patient would be in a global.
Example: Patient presents with a distal radius fracture, doesn't require surgery, provider documents correctly and intends to place the patient in non-op fracture care, coded 25600, patient casted. Since the provider chose 25600, the initial casting service (ex. 29075) would not have been billed and the patient would be in a 90 day global.
The provider has the choice of billing the global way or the itemized way at the initial time of service.