BLS notes that the scope of NP duties varies by state. The American Association of Nurse Practitioners groups states into three categories.
In full practice states, NPs can evaluate patients, diagnose, order and interpret tests, and start and manage treatment, including prescribing, under the licensing authority of the state board of nursing alone.
In reduced practice states, the law requires a career-long collaborative agreement with another provider or limits the setting of at least one part of NP practice. In restricted practice states, NPs need career-long supervision, delegation or team management by another provider to care for patients.
These rules shape which jobs exist, such as NP-run clinics and rural practices, more than they set a pay rate. BLS does not publish NP pay by practice category, so treat any claimed premium for full practice states with caution and compare against the metro table instead.