Are there any CPT codes that can be used in a psychiatric outpatient office setting for injections? (Invega Sustenna, Suboxone, etc) Should HCPCS codes be included with this also?

Also, if a nurse is performing the injection is 99211 used alone?
Would insurances reimburse for an E/M with modifier -25 in addition to 96372 if a nurse is performing the injection? Is it required for a physician to be present?

Also, if blood is being drawn to be sent to an outside lab is it possible to be reimbursed for 36415 or is this considered inclusive of an E/M code? And can this be done by a nurse?
Are there any modifiers required for 36415 in this situation?