The CPT code is where clinical work turns into revenue. Pick the right one and support it in the note, and the claim gets paid. Pick the wrong one, or fail to document what the code requires, and the same session becomes a denial.
This is a practical map of the behavioral health codes that matter in 2026, what each one requires you to document, and the mistakes that quietly cost programs money. Codes and payer rules change every year, so treat this as a working reference and confirm specifics with your payers.
The short version
- The individual psychotherapy codes (90832, 90834, 90837) are time-based. Documented session time determines the code.
- 90791 is the diagnostic evaluation; 90847 and 90846 are family therapy with and without the patient; 90853 is group.
- Add-on codes (90833, 90836, 90838 with E/M; 90785 interactive complexity) are never billed alone.
- Telehealth generally needs modifier 95 and the correct place of service; policies vary by payer.
- The most common denials come from undocumented time, overusing 90837, and un-individualized group notes.
The core psychotherapy codes
| Code | Service |
|---|---|
| 90791 | Psychiatric diagnostic evaluation (no medical services) |
| 90792 | Psychiatric diagnostic evaluation with medical services |
| 90832 | Individual psychotherapy, 16 to 37 minutes |
| 90834 | Individual psychotherapy, 38 to 52 minutes |
| 90837 | Individual psychotherapy, 53 minutes or more |
| 90846 | Family or couples therapy, without the patient present |
| 90847 | Family or couples therapy, with the patient present |
| 90853 | Group psychotherapy |
Time drives the psychotherapy code
The individual psychotherapy codes are time-based, which means the documented time drives the code. That single fact is behind a surprising share of denials.
Document the total face-to-face time, or start and stop times, in every psychotherapy note. And because 90837 sits at the top of the time range and pays more, it draws extra payer scrutiny and, at some plans, frequency limits. Using it is fine when the session ran that long and the record shows why; using it as a default is an audit magnet.
Add-on codes (never billed alone)
Add-on codes attach to a primary service and cannot stand on their own:
- 90833, 90836, 90838: psychotherapy provided with an evaluation and management (E/M) visit, for prescribers combining medication management and therapy in one session (30, 45, and 60 minutes of therapy respectively).
- 90785: interactive complexity, used when communication is more difficult (for example, a young child, or the involvement of third parties).
- 90839 and 90840: psychotherapy for crisis (first 60 minutes, plus an add-on for each additional 30 minutes).
An add-on billed without its primary service is a guaranteed denial.
Medication management and E/M
Prescribers billing medication management use evaluation and management (E/M) codes, and when they also provide therapy in the same visit, they add a psychotherapy add-on (90833, 90836, or 90838). The key documentation point is that the two services are distinct and separately documented: the E/M work (history, exam or medical decision-making) and the psychotherapy (time and content) each have to stand on their own in the note. Blurring them together is how these visits get downcoded or denied.
Telehealth and modifiers
For synchronous, real-time audio and video sessions, most payers expect modifier 95 along with the correct place-of-service code. Audio-only rules and place-of-service requirements vary by payer and change over time, so verify each plan's current telehealth policy rather than assuming parity. Telehealth is also a documentation opportunity: note the modality, that it was synchronous audio and video where required, and the patient's location if the payer wants it.
What documentation each code requires
The code is a claim about what happened. The note has to back it up:
- Time-based codes (90832 / 90834 / 90837) require documented face-to-face time.
- 90837 (53+ minutes) benefits from a note on why the longer session was clinically needed.
- Add-on codes require both the primary service and the add-on service documented separately.
- Group therapy (90853) requires an individualized note for each patient, not one note copied across the group.
- Family therapy (90846 / 90847) requires the note to reflect whether the patient was present.
Weak: 60 minute session, supportive therapy.
Strong: Total face-to-face time 55 minutes. Extended session medically necessary due to acute suicidal ideation requiring collaborative safety planning in addition to planned CBT. Interventions and response documented below.
Pairing CPT with the right diagnosis
A CPT code does not stand alone on a claim; it is paired with an ICD-10 diagnosis, and the two have to agree. The diagnosis has to support the service billed, and for behavioral health it needs to be a codeable clinical diagnosis, not a symptom or a Z code, to establish medical necessity. Mismatches, such as a psychotherapy code paired with a diagnosis that does not justify ongoing therapy, are a common and avoidable denial. The note, the CPT code, and the ICD-10 code should all tell the same story.
Who can bill, and under what rules
Behavioral health is delivered by a range of professionals, psychiatrists, psychologists, licensed clinical social workers, licensed professional counselors, and others, and payer rules about who can bill which codes, at what rate, and under what supervision vary widely. Some payers credential and pay associate-level or supervised clinicians differently, and Medicare has specific rules about which practitioner types it recognizes. Incident-to and supervision arrangements carry their own documentation requirements. The practical advice is to confirm, for each payer, which of your clinicians can bill which services, and to make sure the rendering provider on the claim matches the clinician who actually delivered and documented the care.
Coding mistakes that cause denials
- Time not documented for a time-based code.
- Routine use of 90837 without documenting why the longer session was needed.
- An add-on billed without the primary service.
- Group notes that are identical across patients.
- Confusing 90846 (without patient) and 90847 (with patient).
- Missing the telehealth modifier or using the wrong place of service.
- A code that does not match the documented time (upcoding or downcoding).
Codes and payer policies update annually, and some plans cap 90837 frequency. Confirm the current rules with each payer and the AMA behavioral health coding guide.
How Adentris helps
Adentris checks that the code billed is supported by the note before the claim goes out: documented time for time-based codes, a justification for extended sessions, the primary service behind an add-on, and individualized group notes. When something does not line up, it flags the mismatch and drafts the fix in the moment. To see it on your own charts, book a 30-minute call with our team.
Related reading
- Best behavioral health documentation compliance software
- Behavioral health payer audit readiness solutions
- Documentation software for clinicians
Frequently asked questions
What CPT code is used for a 60-minute therapy session?
90837, individual psychotherapy of 53 minutes or more. Document the total face-to-face time and, because 90837 draws payer scrutiny, note why the longer session was clinically needed.
What is the difference between 90834 and 90837?
Session length. 90834 covers 38 to 52 minutes of individual psychotherapy and 90837 covers 53 minutes or more. Both are time-based, so the documented face-to-face time determines which code is correct.
What are behavioral health add-on codes?
The main ones are 90833, 90836, and 90838, which add psychotherapy to an E/M medication-management visit, and 90785 for interactive complexity. Add-on codes are never billed alone; they accompany a primary service.
Do I need a modifier for telehealth behavioral health sessions?
Usually modifier 95 for synchronous audio and video sessions, along with the correct place-of-service code. Audio-only and place-of-service rules vary by payer and change over time, so confirm each plan's current telehealth policy.
What is the code for a psychiatric diagnostic evaluation?
90791 for a diagnostic evaluation without medical services, and 90792 when medical services are included. These are typically used at intake to establish the diagnosis and treatment plan.
