Current Procedural Terminology or CPT codes are used by psychologists and other mental health professionals in order to bill their services to an insurance company or Medicaid. This is not a complete list, but simply a list of some of the most commonly used CPT codes in mental health and psychology services, meant as a quick-reference sheet. It has been updated for 2014 code changes.

Code Description
90791 Psychiatric diagnostic interview without medical services
90792 Psychiatric diagnostic interview (for prescribers / medical services)
90832 Individual psychotherapy, 30 minutes
    (when performed with an evaluation & management service: 90833)
Non-facility: 64.84 / Facility: 64.12
90834 Individual psychotherapy, 45 minutes
    (when performed with an evaluation & management service: 90836)
Non-facility: 85.97 / Facility: 85.62
90837 Individual psychotherapy, 60 minutes
    (when performed with an evaluation & management service: 90838)
Non-facility: 128.6 / Facility: 127.89
90847 Family Psychotherapy with patient Present
    (without patient present: 90846; multiple-family group psychotherapy: 90849)
Non-facility: 107.47 / Facility: 106.75 (without patient: 104.24 / 103.53; multiple-family group: 34.39 / 30.81)
90853 Group psychotherapy
Non-facility: 26.51 / Facility: 25.79
96101 Psychological testing, interpretation and reporting per hour by a psychologist (per hour)
Non-facility: 80.96 / Facility: 80.24
96102 Psychological testing per hour by a technician (per hour)
96103 Psychological testing by a computer, including time for the psychologist’s interpretation and reporting (per hour)
96105 Assessment of Aphasia
96111 Developmental Testing, Extended
96116 Neurobehavioral Status Exam (per hour)
Non-facility: 94.93 / Facility: 88.84
96118 Neuropsychological testing, interpretation and reporting by a psychologist (per hour)
Non-facility: 99.23 / Facility: 79.88
96119 Neuropsychological testing per hour by a technician
96120 Neuropsychological testing by a computer, including time for the psychologist’s interpretation and reporting
96150 Health & Behavioral Assessment – Initial (each 15 mins)
Non-facility: 21.49 / Facility: 21.14
96151 Reassessment (each 15 mins)
Non-facility: 20.78 / Facility: 20.42
96152 Health & Behavior Intervention – Individual (each 15 mins)
96153 Health & Behavior Intervention – Group (each 15 mins)
96154Health & Behavior Intervention – Family with Patient (each 15 mins)
96155Health & Behavior Intervention – Family without Patient (each 15 mins)
Add ons
90785Interactive complexity add-on (for psychotherapy codes)
90839Patient in crisis add-on – 60 minutes
90840Patient in crisis add-on – Each additional 30 minutes

Notes: Small type denotes medical payment codes. Facility: Includes hospitals (inpatient, outpatient, and emergency department), ambulatory surgical centers (ASCs), and skilled nursing facilities (SNFs). Non-facility: everything else.

You can look up the cost of a particular CPT code in your city or state on the AMA website.