Find the right CPT code for behavioral health services, fast
The wrong CPT code means denied claims, compliance exposure, or underbilling. This reference tool covers 37 behavioral health CPT, HCPCS, and place of service codes, with plain-English descriptions, typical session lengths, and typical reimbursement ranges.
Correct CPT coding is one of the most consequential tasks in behavioral health billing. Submit the wrong code and you risk claim denial, delayed reimbursement, payer audits, or compliance liability. Submit a lower-value code than warranted and you leave revenue on the table. This tool gives clinicians, billing staff, and practice administrators a fast reference for the codes most commonly used in outpatient behavioral health.
Individual psychotherapy codes are distinguished primarily by session length. CPT 90837 covers sessions of 53 minutes or more and is the most widely billed outpatient code. CPT 90834 applies to sessions of 38 to 52 minutes, and CPT 90832 covers shorter sessions of 16 to 37 minutes. Accurate time documentation in the clinical note is the single most important factor in defending these codes during an audit.
Psychiatric evaluation uses separate codes. CPT 90791 covers a psychiatric diagnostic evaluation without medical services, typically performed by a licensed therapist or psychologist. CPT 90792 adds medical services to the evaluation and is billed by prescribers, including psychiatrists and nurse practitioners.
Group therapy is billed under CPT 90853, applied per patient per session. Crisis intervention has its own dedicated codes: CPT 90839 covers the first 60 minutes of crisis psychotherapy, and CPT 90840 is an add-on code for each additional 30 minutes.
Prescribers managing psychiatric medications often use E/M codes rather than psychotherapy codes. CPT 99214 and 99215 are the most common in this context, with the appropriate level determined by medical decision-making complexity or total time spent on that date of service.
HCPCS codes supplement CPT codes for specific services, programs, or populations not fully addressed by CPT. They are commonly required by Medicaid and some managed care payers. Place of service (POS) codes travel alongside CPT codes on every claim and tell payers where services were delivered. POS 11 is an office visit. POS 02 and POS 10 are the two telehealth codes, with 10 used when the patient is at home. Choosing the wrong POS code can change your reimbursement rate, particularly for telehealth services.
This tool is a reference resource, not a substitute for payer-specific contract review or compliance guidance. Requirements vary by payer, state, and program. When in doubt, check the payer’s coverage policy directly.
Frequently asked questions
Both codes cover individual psychotherapy, but session length determines which one applies. CPT 90837 is for sessions of 53 minutes or more. CPT 90834 covers sessions of 38 to 52 minutes. CPT 90832 applies to shorter sessions of 16 to 37 minutes. Billing the wrong code based on actual session time can trigger a compliance audit or result in claim denial, so accurate time documentation in the clinical note is essential.
Generally, no. E/M codes like 99213, 99214, and 99215 are used by physicians, nurse practitioners, and physician assistants who can prescribe and manage medications. Licensed therapists (LCSWs, LPCs, MFTs) typically bill psychotherapy codes such as 90837, 90834, or 90832. If your practice includes both prescribers and therapists, make sure each clinician type is billing under the correct code set.
CPT 90853 is the standard code for group psychotherapy. It covers interactive group sessions that are not family therapy. Each patient in the group is billed individually using 90853. Group therapy is typically reimbursed at a lower rate than individual therapy, which reflects the shared-time model.
CPT 90837 is the most widely billed outpatient behavioral health code. It covers individual psychotherapy sessions of 53 minutes or more and is accepted by most commercial payers and Medicaid plans. It is the default code for a standard therapy hour in most outpatient settings.
A place of service code is a two-digit code submitted on a claim that tells the payer where services were delivered. Common POS codes in behavioral health include 02 (telehealth, patient not at home), 10 (telehealth, patient at home), 11 (office), and 53 (community mental health center). The POS code can directly affect your reimbursement rate. Some payers reimburse telehealth at a lower rate depending on the POS code used, so accuracy matters for both compliance and revenue.
The AMA publishes CPT code updates annually, effective January 1 each year. Behavioral health codes have seen meaningful changes in recent years, particularly around telehealth billing rules following COVID-19 policy changes. Payers may also apply their own coverage rules on top of AMA definitions. It is good practice to review payer contracts and the AMA CPT update each year to make sure your billing stays current.
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