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CPT 90833: Psychotherapy Add-On with Evaluation and Management
CPT code 90833 represents an add-on psychotherapy service provided in the same session as an evaluation and management (E/M) visit. It captures a focused psychotherapy encounter of approximately 16 to 37 minutes and is billed in conjunction with a separate E/M code. Nationally, this code matters because it delineates time-based psychotherapy performed alongside medical evaluation, affecting documentation, billing workflows, and payer adjudication for combined E/M and psychotherapy visits.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, United Healthcare, and Medicare. Readers will find an overview of clinical context for short psychotherapy sessions performed with an E/M visit, typical sites of service, and the common coding relationships to adjacent psychotherapy codes. The publication also summarizes benchmark considerations and payer coverage patterns relevant to add-on psychotherapy services, plus policy and documentation elements that influence correct use of 90833.
This summary equips clinicians, coders, and revenue cycle staff with a concise understanding of what 90833 denotes, which payers commonly cover it, and what to expect when integrating short psychotherapy services into E/M encounters.
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Billing Code Overview
CPT code 90833 is an add-on psychotherapy service billed when psychotherapy is provided in the same session as an evaluation and management (E/M) service. The service is defined as a focused psychotherapy encounter typically lasting 16 to 37 minutes and is provided in addition to the primary E/M visit.
Service type: Psychotherapy add-on provided with an evaluation and management service
Typical site of service: Outpatient clinic or office-based psychiatric/medical visit where an E/M service is performed
National Reimbursement Benchmarks
Medicare’s mean rate sits near $83.8, closely tracking national commercial averages: BUCA’s mean is notably higher at $178.00, making BUCA about $94.20 above Medicare on average. This gap highlights a substantial spread between government reimbursement levels and a prominent commercial benchmark, with BUCA positioned well above Medicare’s midpoint of locality means.
Dispersion (P75–P25) varies across payers: Blue Cross Blue Shield shows the widest interquartile spread at $99.5 (P75 $287.6 minus P25 $184.1), reflecting high variability in negotiated rates. Aetna’s spread is relatively narrow at $26.3 (P75 $93.4 minus P25 $61.0), indicating tighter clustering. UnitedHealth Group ($65.1 spread), Cigna ($61.5 spread), and BUCA ($82.0 spread) fall in between, so BCBS is the most dispersed and Aetna the tightest in the national landscape.