Mental Health CPT Code Cheat Sheet: The Definitive 2026 Edition for Therapists, Psychiatrists & Group Practices
If you've ever stared at a superbill and second-guessed whether you should bill 90837 or 90834, or wondered whether your psychiatrist colleague should be using 99213 or 99214 for a med management visit — you're not alone. CPT code selection is one of the most error-prone, audit-triggering, and revenue-leaking areas in behavioral health billing.
This guide exists to fix that.
We're cutting through the CMS jargon and giving you a practical, ready-to-use mental health CPT code cheat sheet — built for the real clinical world of 2026. Whether you're a solo LCSW, an LMFT in a group practice, a psychiatrist juggling E&M codes, or an LPC who just got paneled with a new payer, bookmark this page. You'll come back to it.
Why CPT Codes Matter More Than Ever in 2026
The behavioral health billing landscape has shifted significantly heading into 2026. Here's what's driving the stakes higher:
- CMS reimbursement rate adjustments under the 2026 Medicare Physician Fee Schedule continue to affect base rates for psychotherapy codes.
- Payer audits are intensifying. Commercial payers like Anthem, Aetna, Cigna, and UnitedHealthcare have ramped up post-payment reviews on high-volume therapy codes, particularly 90837.
- Telehealth parity laws in over 40 states now affect how and whether you can bill in-person vs. virtual sessions at the same rate.
- Group practices are under increasing scrutiny for incident-to billing and supervision compliance.
Getting your CPT codes right isn't just about revenue — it's about staying out of trouble.
Part 1: Individual Psychotherapy CPT Codes (The Core Four)
These are the codes most outpatient therapists will use daily. Know them cold.
| CPT Code | Service Description | Time | Avg. Medicare Rate (2026 Est.) |
|---|---|---|---|
| 90832 | Psychotherapy, office | 16–37 min | ~$80–$90 |
| 90834 | Psychotherapy, office | 38–52 min | ~$110–$120 |
| 90837 | Psychotherapy, office | 53+ min | ~$150–$165 |
| 90839 | Psychotherapy for crisis, first 60 min | 60 min | ~$175–$195 |
| 90840 | Psychotherapy for crisis, each additional 30 min (add-on) | +30 min | ~$90–$100 |
The 90837 Reality Check: This is the most billed outpatient therapy code in the country, and payers know it. The documentation burden is real — you need to show that the session actually ran 53 minutes or more. Not "about an hour." Not "standard session." Specific start/end times or a clear time statement in your note is non-negotiable in 2026.
Pro tip: If your sessions consistently run 45–50 minutes, bill 90834 — not 90837. Upcoding to 90837 for sessions that don't hit the 53-minute threshold is the #1 audit trigger for therapists.
Part 2: Psychotherapy Add-On Codes (Don't Leave Money on the Table)
These codes are billed in addition to E&M codes (not standalone) and are a massive revenue opportunity that many psychiatrists and prescribing NPs overlook.
| CPT Code | Service Description | Time | Avg. Medicare Rate (2026 Est.) |
|---|---|---|---|
| 90833 | Psychotherapy add-on to E&M | 16–37 min | ~$65–$75 |
| 90836 | Psychotherapy add-on to E&M | 38–52 min | ~$95–$105 |
| 90838 | Psychotherapy add-on to E&M | 53+ min | ~$130–$145 |
When do you use these? When a psychiatrist or PMHNP conducts both a medication management visit and provides structured psychotherapy in the same encounter. You bill the E&M code (e.g., 99214) + the add-on (e.g., 90833).
The catch: The psychotherapy component must be separately identifiable and documented. If your note just says "supportive therapy provided" — that's not going to cut it in an audit. The therapeutic intervention needs its own documentation block.
Part 3: Psychiatric Evaluation & E&M Codes for Psychiatrists
Psychiatrists have a unique billing universe because they can choose between psychiatric-specific codes and standard E&M codes — sometimes in the same practice.
Psychiatric Diagnostic Evaluation
| CPT Code | Service Description | Avg. Medicare Rate (2026 Est.) |
|---|---|---|
| 90791 | Psychiatric diagnostic evaluation (no medical services) | ~$195–$215 |
| 90792 | Psychiatric diagnostic evaluation with medical services | ~$230–$255 |
90791 vs. 90792: Use 90792 when the evaluation includes a medical component — reviewing labs, assessing physical health factors, prescribing medications. Therapists and LCSWs use 90791. Psychiatrists typically use 90792 for initial intakes.
E&M Codes for Medication Management
| CPT Code | Complexity | Avg. Time | Avg. Medicare Rate (2026 Est.) |
|---|---|---|---|
| 99212 | Straightforward | 10–19 min | ~$55–$65 |
| 99213 | Low complexity | 20–29 min | ~$90–$100 |
| 99214 | Moderate complexity | 30–39 min | ~$130–$145 |
| 99215 | High complexity | 40–54 min | ~$185–$205 |
2026 E&M Reminder: Since the 2021 E&M overhaul took effect, code selection is based on medical decision-making (MDM) OR total time — not history/exam bullet points. This means a 25-minute visit with moderate MDM qualifies for 99214, even if your HPI is brief. Document the MDM explicitly — number of diagnoses, data reviewed, risk level.
Which should psychiatrists use — 90xxx or 99xxx? Both are valid. Many psychiatrists prefer 99214/99215 + 90833 add-on for visits that include therapy, as this often yields higher combined reimbursement than standalone codes. Run the math with your specific payer contracts.
Part 4: Group Therapy CPT Codes
Group therapy billing is underutilized in behavioral health, partly because the documentation and supervision rules confuse providers.
| CPT Code | Service Description | Avg. Medicare Rate (2026 Est.) |
|---|---|---|
| 90853 | Group psychotherapy (not multi-family) | ~$35–$50 per member |
| 90849 | Multiple-family group psychotherapy | ~$55–$65 per family |
| 90847 | Family psychotherapy with patient present | ~$130–$150 |
| 90846 | Family psychotherapy without patient present | ~$120–$140 |
Group billing rules: Bill 90853 per patient — not per group. A group of 8 clients = 8 claims for 90853. Each client's chart needs a group note documenting their participation, themes discussed, and clinical observations. One shared note for the whole group will get you audited.
Supervision note: In group practices, if an intern or supervised clinician is running a group, incident-to billing rules do NOT apply to mental health services under Medicare. Know your state rules for Medicaid and commercial payers.
Part 5: Psychological & Neuropsychological Testing Codes
This is a specialty area with significant billing complexity, but the reimbursement rates make it worth understanding.
| CPT Code | Service Description | Unit |
|---|---|---|
| 96130 | Psychological testing evaluation by psychologist, first hour | Per hour |
| 96131 | Each additional hour | Per hour |
| 96136 | Psychological/neuropsych test administration, first 30 min | Per 30 min |
| 96137 | Each additional 30 min | Per 30 min |
| 96132 | Neuropsychological testing evaluation, first hour | Per hour |
| 96133 | Each additional hour | Per hour |
Testing codes are time-based and require documentation of who performed each component (the licensed psychologist vs. a technician), the instruments used, and the clinical interpretation. Sloppy testing billing is one of the highest-risk audit areas in behavioral health.
Part 6: Telehealth Billing in 2026 — What's Changed
Telehealth parity continued to evolve post-PHE (public health emergency). Here's where things stand for 2026:
- Medicare: Audio-video telehealth for behavioral health remains covered when conducted from a HIPAA-compliant platform. Modifier 95 (synchronous telehealth) or GT (for certain Medicare Advantage plans) applies.
- Audio-only: Modifier 93 covers telephone-only therapy under Medicare, but reimbursement is lower and payer acceptance varies widely.
- Place of Service: Use POS 10 (Telehealth, Patient's Home) for most Medicare telehealth behavioral health claims. POS 02 is for telehealth where the patient is at a non-home originating site.
- Commercial payers: Check individual contracts. Cigna, Aetna, UHC, and BCBS all have different telehealth billing requirements in 2026 — some require specific platform attestation.
State parity laws matter: If your state has strong parity laws (California, New York, Illinois, Washington), commercial payers must reimburse telehealth at in-person rates. Many don't automatically comply — you may need to appeal.
Part 7: Commonly Missed Add-On & Ancillary Codes
These codes are frequently left unbilled, costing practices thousands per year:
| CPT Code | Description | Notes |
|---|---|---|
| 99408 | Alcohol/substance misuse structured screening, 15–30 min | SBIRT — highly reimbursable, often missed |
| 99409 | Alcohol/substance misuse structured screening, 30+ min | — |
| 96127 | Brief emotional/behavioral assessment | Per standardized instrument (PHQ-9, GAD-7) |
| 99484 | Care management services for behavioral health (20 min/month) | Collaborative care model |
| 99492 | Initial psychiatric collaborative care management, first 70 min | CoCM — huge opportunity for integrated practices |
| 99493 | Subsequent psychiatric collaborative care management, 60 min | — |
SBIRT codes (99408/99409) are particularly underutilized. If you're conducting substance use screening as part of an intake, you can bill these in addition to your diagnostic evaluation code in many circumstances. Confirm payer policy before billing.
Part 8: Modifiers That Can Make or Break Your Claim
| Modifier | Meaning | When to Use |
|---|---|---|
| 95 | Synchronous telehealth | Audio-video telehealth visits (Medicare) |
| 93 | Audio-only telehealth | Phone-only therapy visits |
| GT | Telehealth via interactive system | Some Medicare Advantage plans |
| GQ | Asynchronous telehealth | Rare in therapy; mostly store-and-forward |
| 52 | Reduced services | When a service is significantly shorter than typical |
| 59 | Distinct procedural service | When billing two services that might look bundled |
| 25 | Significant, separately identifiable E&M | Required when billing E&M + psychotherapy add-on same day |
Modifier 25 is critical for psychiatrists billing E&M + add-on psychotherapy codes. Without it, many payers will bundle and deny the add-on.
Part 9: Top 5 Billing Mistakes That Trigger Audits (And How to Avoid Them)
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Billing 90837 without documenting time. Always include session start/end time or a clear statement like "53-minute psychotherapy session."
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Using 90791 for every intake regardless of clinician type. Psychiatrists conducting evaluations with medical components need 90792.
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Not billing add-on psychotherapy codes. If a psychiatrist does a 99214 + 30 minutes of structured CBT, that's a 99214 + 90833. One code alone leaves $65–$75 on the table per visit.
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Incorrect POS codes for telehealth. POS 10 vs. POS 02 vs. POS 11 — this distinction matters for Medicare claims and some commercial payers.
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Missing modifier 25 when billing same-day E&M + therapy. This is one of the most common denial reasons for psychiatry practices.
Frequently Asked Questions (FAQ)
Q1: Can therapists (LCSWs, LPCs, LMFTs) bill E&M codes like 99213 or 99214? Generally, no. E&M codes require a medical license to bill under Medicare. Therapists and counselors bill psychotherapy codes (90832–90837). However, some commercial payers may allow it under specific credentialing arrangements — always verify with the individual payer.
Q2: What's the difference between 90837 and 90834, and how do I choose? It comes down to session length. 90834 covers 38–52 minutes of psychotherapy; 90837 covers 53 minutes or more. If your typical session runs 45–50 minutes, 90834 is your code. Billing 90837 for a 45-minute session without documented time is upcoding — a real audit and compliance risk.
Q3: How does Medicare reimburse telehealth therapy in 2026? Medicare covers audio-video synchronous psychotherapy billed with modifier 95 and POS 10 when the patient is at home. Audio-only therapy is covered with modifier 93 but at a reduced rate. Mental health providers must also meet the in-person visit requirement (one in-person visit within 6 months of initiating telehealth, then annually) under current Medicare rules — verify the latest CMS guidance as this has been a moving target.
Q4: Can I bill 90853 (group therapy) and 90837 (individual therapy) on the same day for the same patient? Yes, in most circumstances — if the patient received both services on the same date. You may need modifier 59 on one of the codes to indicate they are distinct services. Document both sessions separately in the chart.
Q5: What documentation do I need to support a 90837 claim in an audit? At minimum: session date, start and end time (or a statement that the session lasted 53+ minutes), CPT code used, diagnosis code, clinical content (presenting concerns, interventions, response, plan), and provider signature and credentials. Using a structured SOAP or DAP note format with a time statement is audit-gold.
Q6: Are PHQ-9 and GAD-7 billable? Yes — under CPT code 96127 (Brief Emotional/Behavioral Assessment) when you administer a standardized instrument and interpret the results. Many practices run these at every session and never bill them. At $15–$25 per administration depending on payer, that adds up fast.
Q7: What is the Collaborative Care Model (CoCM) and why should group practices care? CoCM is a team-based model integrating behavioral health into primary care settings, billed using codes 99492, 99493, and 99494. For group practices that partner with PCPs or operate integrated clinics, these codes represent significant monthly recurring revenue and are increasingly supported by commercial payers.
How Mozu Health Helps You Bill Right — Every Time
Getting CPT codes right is one thing. Getting them right consistently, across every clinician, every payer, every note — that's where most practices struggle.
Mozu Health is an AI-powered clinical documentation platform built specifically for behavioral health. Here's how it takes the billing guesswork out of your practice:
- Smart CPT Code Suggestions: Mozu Health analyzes your session notes and flags the appropriate CPT code based on documented time, service type, and complexity — so you never accidentally undercode or overcode.
- Audit-Ready Documentation: Every note generated or reviewed by Mozu Health is structured to support the CPT code being billed — with time statements, intervention documentation, and MDM elements built in.
- Telehealth & Modifier Compliance: Mozu Health prompts the correct modifiers and POS codes based on the visit type, keeping your telehealth claims clean.
- Group Practice Oversight: For group practices, supervisors and billing managers get real-time visibility into documentation quality and billing accuracy across the entire team.
- HIPAA-Compliant, Always: Your notes, your clients, your data — protected by enterprise-grade HIPAA compliance infrastructure.
Whether you're a solo therapist tired of billing headaches or a group practice administrator managing 20+ clinicians, Mozu Health gives you the documentation backbone to bill confidently, defend audits fearlessly, and spend more time on what you actually trained for: helping people.
Ready to stop second-guessing your CPT codes?
👉 Try Mozu Health free at mozuhealth.com — and see how AI-powered documentation can protect your revenue and your license in 2026 and beyond.
Disclaimer: CPT code reimbursement rates are estimates based on 2026 Medicare Physician Fee Schedule data and may vary by geographic location, payer, and contract terms. Always verify current rates with CMS and your individual payer contracts. This content is for educational purposes and does not constitute legal or billing compliance advice.
