CPT 90837 vs 90834 vs 90832: The Definitive Guide to Billing the Right Therapy Code in 2026
If you've ever stared at your billing screen and wondered whether you just ran a 90837 session or a 90834 session, you're not alone. These three psychotherapy CPT codes are among the most commonly used — and most commonly miscoded — codes in all of behavioral health billing. Getting them wrong doesn't just mean a few dollars lost per session. It can trigger payer audits, prompt recoupment demands, and put your license at risk if a pattern of upcoding is discovered.
This guide breaks down CPT 90837, 90834, and 90832 in plain language: what each code means, exactly when to use it, how much each pays, and how to document sessions so your claims survive scrutiny from Aetna, UnitedHealthcare, Cigna, and anyone else reviewing your records.
Let's get into it.
The Short Answer: It's About Time — Literally
All three codes describe individual psychotherapy with a patient. The primary differentiator is session length (face-to-face time). Here's the framework at a glance:
| CPT Code | Session Time | Common Name | Typical Medicare Rate (2025) | |----------|-------------|-------------|-----------------------------| | 90832 | 16–37 minutes | Short session | ~$75–$85 | | 90834 | 38–52 minutes | Mid-length session | ~$110–$125 | | 90837 | 53+ minutes | Full hour session | ~$150–$175 |
Important: These are approximate Medicare rates. Commercial payer rates vary significantly by region and contract. Always verify your specific contracted rates.
Now let's go deeper.
CPT 90832: The 16–37 Minute Psychotherapy Code
What it is: Individual psychotherapy, 30 minutes (the official descriptor says "approximately 30 minutes," which AMA defines as 16–37 minutes of face-to-face psychotherapy time).
When you should actually use it:
- Brief check-in sessions with stable, long-term clients
- Crisis stabilization follow-ups where a shorter touchpoint is clinically appropriate
- Sessions that genuinely ran short due to client lateness, early termination, or clinical judgment
- Medication management add-ons (90832 is often paired with E&M codes like 99213 or 99214 when psychiatrists provide both)
When therapists misuse it: The most common mistake is billing 90832 to "play it safe" because a clinician is worried about justifying a longer session. This is actually a compliance problem in reverse — undercoding is still inaccurate billing, and it's leaving real money on the table.
Documentation must-haves for 90832:
- Start and stop times (or total face-to-face minutes)
- A brief but clinically meaningful note — don't write three sentences just because it was a short session
- Medical necessity statement tying session length to clinical judgment
CPT 90834: The 38–52 Minute Psychotherapy Code
What it is: Individual psychotherapy, 45 minutes (AMA defines this as 38–52 minutes of face-to-face psychotherapy).
When you should actually use it:
- Your standard 45-minute clinical hour — yes, this is the right code for that
- Sessions where meaningful therapeutic work occurred but didn't reach the 53-minute threshold
- When your practice schedules 45-minute appointments as the default
The uncomfortable truth about 90834: This code is dramatically underused. Many therapists reflexively bill 90837 because they schedule "50-minute hours" or "60-minute sessions," but if their face-to-face psychotherapy time doesn't actually reach 53 minutes (accounting for documentation, phone calls, or interruptions), they should be billing 90834.
Payers like UnitedHealthcare and Cigna have sophisticated data analytics. If every single one of your sessions is billed as 90837, that pattern can flag your account for review — especially if your peers in the same specialty are billing a mix of codes.
Documentation must-haves for 90834:
- Start and stop times
- A complete note with presenting complaints, interventions used, progress toward treatment goals, and plan
- Confirmation that the session was face-to-face (or via telehealth with appropriate modifier)
CPT 90837: The 53+ Minute Psychotherapy Code
What it is: Individual psychotherapy, 60 minutes (AMA defines this as 53 minutes or more of face-to-face psychotherapy).
This is the highest-reimbursing individual therapy code in routine outpatient care, and it's the one most likely to attract scrutiny if overused without proper documentation.
When you should actually use it:
- Any session where you have 53 or more minutes of direct psychotherapy contact
- Intensive initial sessions with complex presentations
- Trauma processing sessions (EMDR, CPT, prolonged exposure) that run long by design
- Sessions addressing acute suicidality or crisis requiring extended assessment and intervention
The big billing mistake with 90837: Billing it because "that's what everyone does" or "that's what my schedule says" without tracking actual face-to-face minutes. If a client arrives 10 minutes late, takes a bathroom break, and you spend 8 minutes writing your note during session — you may not actually be at 53 minutes of psychotherapy time.
Documentation must-haves for 90837:
- Start and stop times are non-negotiable — this is your audit protection
- A substantive clinical note that reflects the complexity and length of the session
- Medical necessity language explaining why a full 60-minute session was clinically indicated
- Interventions used, client response, and progress toward treatment plan goals
The Face-to-Face Time Rule: What Actually Counts?
Here's where clinicians get tripped up. The time you bill must reflect face-to-face psychotherapy time — not:
- Time spent writing your note after the session
- Time on the phone with a family member (that's a different code)
- Waiting for a client who's running late
- Reviewing records before the client walks in
What does count:
- Active engagement in psychotherapy with the client present (in-person or via HIPAA-compliant telehealth)
- Structured therapeutic interventions, assessment, crisis intervention, and psychoeducation happening during the session
Pro tip: Document your start and stop times in every note, every time. It takes three seconds and it's the single best thing you can do to protect yourself in an audit.
Add-On Codes: What About 90833, 90836, and 90838?
These add-on codes work in tandem with Evaluation & Management (E&M) codes when a prescriber (psychiatrist, PMHNP, or other qualified provider) provides both medication management and psychotherapy in the same visit.
| Add-On Code | Used With | Psychotherapy Time | |-------------|-----------|-------------------| | 90833 | E&M code | 16–37 min psychotherapy | | 90836 | E&M code | 38–52 min psychotherapy | | 90838 | E&M code | 53+ min psychotherapy |
Therapists and counselors who don't prescribe should not be using these add-on codes. They're specifically for prescribing providers billing a combined visit.
How Major Payers Handle These Codes
Medicare
Medicare follows the AMA time thresholds strictly. They also require that psychotherapy be medically necessary and tied to a documented mental health diagnosis. Medicare does not cover psychotherapy for social support or general wellness — your documentation must reflect clinical need.
Medicaid
Medicaid rates vary dramatically by state, but most state Medicaid programs follow similar time-based thresholds. Some state Medicaid programs have their own billing guidelines, so always verify with your state's fee schedule.
UnitedHealthcare
UHC has been active in behavioral health audits in recent years. They look for statistical outliers in billing patterns. If 95% of your sessions are 90837, expect a closer look. Documentation must include start/stop times and a note that justifies session length.
Aetna
Aetna's behavioral health policies require that the time documented matches the code billed. They've been known to request records for high-volume 90837 billers and compare documentation patterns.
BlueCross BlueShield (varies by plan)
Most BCBS plans follow AMA guidelines but check your specific local plan's behavioral health provider manual — some have additional requirements for extended sessions.
Telehealth and These Codes in 2026
Good news: all three codes (90832, 90834, 90837) are billable via telehealth with the appropriate modifier. For most payers:
- Add modifier 95 for synchronous telehealth
- Add place of service code 10 (telehealth provided in patient's home) or 02 (other telehealth) depending on the payer
The time rules are identical — face-to-face video time counts, but tech troubleshooting time does not.
Telehealth parity laws have expanded significantly, and most major commercial payers now reimburse telehealth therapy at rates equal to or close to in-person. Always verify current parity status with each payer.
Quick Decision Tree: Which Code Do I Bill?
- Was the session individual psychotherapy (not group, not family)? → Yes → Continue
- Did you have 53+ minutes of face-to-face psychotherapy time? → Yes → Bill 90837
- Did you have 38–52 minutes of face-to-face psychotherapy time? → Yes → Bill 90834
- Did you have 16–37 minutes of face-to-face psychotherapy time? → Yes → Bill 90832
- Did you also provide medication management (prescribers only)? → Yes → Use the appropriate add-on code (90833/90836/90838) paired with your E&M code
Documentation: The Difference Between a Clean Claim and an Audit
Payers aren't just looking at what code you billed — they're looking at whether your documentation supports the code you billed. Here's what a defensible 90837 note needs:
- Start and stop times (e.g., "Session conducted 2:00 PM – 3:05 PM, 65 minutes face-to-face")
- Presenting concerns/chief complaint for this session
- Mental status or clinical observations
- Interventions used (CBT techniques, DBT skills, EMDR processing, motivational interviewing, etc.)
- Client response to interventions
- Progress toward treatment plan goals (reference your actual treatment plan goals)
- Risk assessment (when clinically indicated)
- Plan (next session focus, homework, referrals)
- Diagnosis codes (ICD-10) that are consistent with the treatment being provided
A note that says "Pt discussed stressors. Session was therapeutic. Will follow up next week" is not going to survive an audit for any code, let alone 90837.
FAQ: CPT 90837, 90834, and 90832
Q1: Can I bill 90837 for every session if my sessions are always 60 minutes?
You can — if your documentation consistently shows 53+ minutes of face-to-face psychotherapy time and your clinical notes support the medical necessity of full-hour sessions. The issue isn't billing 90837 frequently; it's billing it without documentation to back it up. If audited, you need to show time records and substantive notes for every 90837 claim.
Q2: What happens if I consistently bill 90837 but my sessions are actually 45 minutes?
This is upcoding — billing a higher-level code than what was actually performed. If discovered in an audit, you could face recoupment of overpayments, exclusion from payer networks, and in egregious or intentional cases, referral to the OIG or state licensing board. This is not a risk worth taking.
Q3: Do I need to use start and stop times, or is documenting "60-minute session" enough?
While the AMA doesn't mandate a specific format for time documentation, most payers strongly prefer — and many now require — actual start and stop times. Documenting "60-minute session" without times is defensible if your practice has consistent scheduling records, but start/stop times are best practice and give you the strongest audit protection.
Q4: Can therapists (LPC, LCSW, LMFT) bill 90837, or is that only for psychiatrists?
Yes — all licensed mental health clinicians who are credentialed with payers can bill 90837, 90834, and 90832. Psychiatrists and PMHNPs typically use these codes alongside E&M codes, but therapists absolutely use the base psychotherapy codes independently.
Q5: What's the reimbursement difference between 90834 and 90837 worth worrying about?
Yes, it's meaningful. The difference between 90834 and 90837 is typically $40–$60 per session depending on your payer and region. If you see 20 clients per week and you're consistently billing 90834 when you should be billing 90837, that could be $800–$1,200 per week in lost revenue — or roughly $40,000–$60,000 annually. Accurate coding matters for your practice's financial health, not just compliance.
Q6: Can I split a long session into two codes — for example, bill both 90837 and 90832 for a 90-minute session?
No. You cannot split a single continuous session into multiple psychotherapy codes for the same patient on the same date. A 90-minute session would still be billed as 90837 (53+ minutes). If you are providing extended/intensive outpatient services, look into other coding frameworks like psychological testing or intensive outpatient program (IOP) billing — but standard 53+ minute sessions are a single 90837 claim.
The Bottom Line
Billing CPT 90837, 90834, or 90832 correctly comes down to three things:
- Know your actual face-to-face time — track it, document it, own it
- Write notes that match the code — a 90837 needs a substantive note
- Be consistent — your billing pattern should reflect your actual clinical practice
This isn't just about compliance. Accurate coding protects your income (no recoupments), protects your license (no fraud referrals), and protects your time (no audit stress). It's the foundation of a sustainable behavioral health practice.
How Mozu Health Makes This Easier
Tracking session times, writing thorough notes for every client, cross-referencing your documentation against billing codes, and keeping up with payer-specific requirements — it's a lot. Most clinicians are doing this manually, which means errors happen.
Mozu Health is built specifically for behavioral health providers who want to get documentation right without spending half their evening on notes. Our AI-powered platform:
- Auto-captures session timestamps so you never have to worry about missing start/stop times
- Generates HIPAA-compliant clinical notes that are structured to support the CPT code billed
- Flags potential billing mismatches before you submit a claim — catching 90837 documentation that doesn't support the time billed, or 90834 notes that should actually be 90837
- Supports audit defense with organized, payer-ready documentation for every session
- Integrates with your EHR and billing workflow so documentation and billing stay in sync
Whether you're a solo LPC, an LCSW in a group practice, or a psychiatrist managing a busy caseload, Mozu Health helps you bill accurately, document defensibly, and spend more time doing what you trained to do — providing great care.
Ready to stop guessing which code to bill and start knowing?
👉 Try Mozu Health free at mozuhealth.com — and see how AI-powered documentation can protect your practice while giving you hours of your week back.
