Behavioral Health CPT Codes: The Complete 2026 Guide for Therapists and Psychiatrists
If you've ever submitted a claim only to watch it bounce back with a CO-4 or CO-11 denial, you already know that getting your CPT codes right isn't optional — it's the difference between getting paid and not getting paid. This guide breaks down every major behavioral health CPT code you'll use in 2026, what documentation each one actually requires, how reimbursement rates shake out across major payers, and where most practices quietly lose money without realizing it.
Bookmark this one. You're going to reference it.
Why CPT Codes Matter More Than Ever in 2026
Three things are making behavioral health billing more complicated heading into 2026:
- Parity enforcement is intensifying. The Mental Health Parity and Addiction Equity Act (MHPAEA) final rule published in 2024 puts more pressure on payers to reimburse behavioral health at rates comparable to medical/surgical benefits — but only if your documentation can withstand scrutiny.
- Telehealth rules are still evolving. The COVID-era telehealth flexibilities have been extended through 2026, but payer-specific modifier requirements keep shifting.
- AI-driven claim scrubbing is everywhere. United, Aetna, and Cigna are all using automated pre-payment review tools. A vague treatment note isn't just a compliance risk anymore — it's an immediate denial trigger.
Bottom line: using the right code is step one. Documenting it properly is what actually gets you paid.
The Complete 2026 Behavioral Health CPT Code List
Psychotherapy Codes (Individual)
These are the bread-and-butter codes for most outpatient therapists.
| CPT Code | Service Description | Typical Time | 2026 Medicare Rate (approx.) | |---|---|---|---| | 90832 | Psychotherapy, 16–37 minutes | ~30 min | $73–$85 | | 90834 | Psychotherapy, 38–52 minutes | ~45 min | $100–$115 | | 90837 | Psychotherapy, 53+ minutes | ~60 min | $134–$155 | | 90839 | Psychotherapy for crisis, first 60 min | 60 min | $175–$200 | | 90840 | Psychotherapy for crisis, each add'l 30 min | +30 min | $88–$100 |
Documentation essentials for 90837 (your highest-volume code): You need a mental status exam, a specific intervention tied to your treatment plan, the patient's response to that intervention, and a plan for next session. "Patient discussed feelings, doing better" will not survive a United Healthcare audit.
Psychiatric Evaluation Codes
Used primarily by psychiatrists, NPs, and some integrated care settings.
| CPT Code | Service Description | Typical Time | 2026 Medicare Rate (approx.) | |---|---|---|---| | 90791 | Psychiatric diagnostic evaluation (no medical) | 60–90 min | $162–$185 | | 90792 | Psychiatric diagnostic eval with medical services | 60–90 min | $185–$215 |
Key difference: 90792 includes prescribing authority and medical decision-making. If you're a prescriber reviewing labs, adjusting medications, or ordering tests during the evaluation, 90792 is your code. Therapists without prescribing authority bill 90791.
Add-On Codes (Psychotherapy + E/M)
This is where psychiatrists and prescribing NPs generate significant revenue — and where billing errors are most common.
| CPT Code | Service Description | Notes | |---|---|---| | 90833 | Psychotherapy add-on, 16–37 min | Add to E/M code | | 90836 | Psychotherapy add-on, 38–52 min | Add to E/M code | | 90838 | Psychotherapy add-on, 53+ min | Add to E/M code |
These codes are never billed alone. They're always paired with an E/M code (99213, 99214, etc.). The clock starts after the E/M portion ends. Document the two services separately in your note — time spent on medical decision-making versus time spent on psychotherapy.
Evaluation and Management (E/M) Codes for Psychiatry
| CPT Code | Level | Typical Use Case | 2026 Medicare Rate (approx.) | |---|---|---|---| | 99212 | Level 2 established | Simple med check, stable patient | $48–$58 | | 99213 | Level 3 established | Routine medication management | $78–$92 | | 99214 | Level 4 established | Complex med management, new symptoms | $112–$130 | | 99215 | Level 5 established | High complexity, multiple conditions | $148–$170 | | 99205 | Level 5 new patient | Complex new patient intake | $205–$240 |
Since the 2021 E/M changes, complexity of medical decision-making (MDM) drives level selection — not just time. For psychiatric E/M, "moderate complexity" MDM (99214) typically involves a chronic illness with exacerbation or a new problem requiring additional workup.
Group Therapy Codes
| CPT Code | Service Description | Time | 2026 Medicare Rate (approx.) | |---|---|---|---| | 90853 | Group psychotherapy | 45–90 min | $30–$40 per member | | 90849 | Multiple-family group psychotherapy | 90 min | $40–$55 per family |
Group notes must document each member's participation and response individually. One generic group note covering all patients is a common audit finding — and a costly one.
Family and Couples Therapy Codes
| CPT Code | Service Description | Time | 2026 Medicare Rate (approx.) | |---|---|---|---| | 90846 | Family psychotherapy without patient present | 50 min | $95–$115 | | 90847 | Family psychotherapy with patient present | 50 min | $100–$125 | | 90849 | Multiple-family group psychotherapy | 90 min | $40–$55 |
Watch this: 90847 requires the identified patient (IP) to be physically or virtually present. If you meet with a spouse alone to discuss treatment strategy, that's 90846. Mixing these up is a very common — and very auditable — error.
Telehealth Modifiers for 2026
Telehealth isn't a separate code set — it's the same CPT codes with the right modifiers. In 2026:
- Modifier 95: Synchronous telehealth via audio-video
- Modifier GT: Used for Medicare telehealth (federally qualified health centers, rural health clinics)
- Modifier 93: Audio-only telehealth (check payer-specific rules — not universally accepted)
- Place of Service 02: Telehealth provided other than in patient's home
- Place of Service 10: Telehealth provided in patient's home
Aetna, Cigna, and BCBS each have slightly different modifier requirements for audio-only. Verify before billing.
Substance Use Disorder (SUD) Codes
| CPT Code | Service Description | Notes | |---|---|---| | H0001 | Alcohol/drug assessment | HCPCS, Medicaid-heavy | | H0005 | Alcohol/drug services — group | HCPCS | | H0015 | Alcohol/drug treatment program, intensive outpatient | HCPCS | | 99408 | Alcohol/substance abuse structured screening, 15–30 min | Preventive, non-mental health setting | | 99409 | Alcohol/substance abuse structured screening, 30+ min | Preventive, non-mental health setting | | T1006 | Alcohol/drug services, peer specialist | HCPCS |
SUD billing varies significantly by state Medicaid program. If you're billing Medicaid in Texas, Florida, or California, verify your state-specific HCPCS requirements before submitting.
Psychological and Neuropsychological Testing Codes
| CPT Code | Service Description | |---|---| | 96130 | Psychological testing evaluation, first hour | | 96131 | Psychological testing evaluation, each additional hour | | 96132 | Neuropsychological testing evaluation, first hour | | 96133 | Neuropsychological testing evaluation, each additional hour | | 96136 | Psychological testing, automated, first 30 min | | 96137 | Psychological testing, automated, each additional 30 min |
These require a qualified professional to score, interpret, and write a report. Raw test administration alone does not support these codes.
Where Practices Lose Money: The Most Misused Behavioral Health Codes
Undercoding 90834 vs. 90837: Many therapists default to 90834 (45-min session) even when sessions consistently run 53+ minutes. If your average session is 55 minutes, you're leaving roughly $35–$50 per session on the table. That's $7,000–$10,000 per year for a full caseload.
Skipping add-on codes: Psychiatrists who do a brief therapy check-in after medication management are frequently not billing 90833. That add-on alone reimburses $50–$75 per encounter.
Using 90791 when 90792 applies: Prescribers billing intake evaluations with 90791 instead of 90792 are underbilling by $20–$40 per intake.
Missing crisis codes: 90839 reimburses nearly $200 — but only if your documentation clearly establishes the crisis presentation (suicidal ideation, acute psychiatric decompensation, etc.). Lots of crisis interventions get billed as 90837 because the note doesn't support the higher code.
What Payers Are Actually Auditing in 2026
United Healthcare, Aetna, and Cigna's pre-payment review programs are specifically targeting:
- High-frequency 90837 billing without measurable progress noted in documentation
- Telehealth claims without correct Place of Service codes
- Group therapy notes that look copy-pasted across sessions
- New patient intakes billed as 90791 by prescribers who should be billing 90792
- Crisis codes (90839) without documented acute psychiatric emergency
Medicare RAC auditors are specifically looking at whether your psychotherapy documentation includes all required elements: chief complaint, mental status, treatment interventions, patient response, and next appointment plan.
FAQ: Behavioral Health CPT Codes 2026
Q: Can a therapist (LCSW, LPC, LMFT) bill E/M codes? A: No. E/M codes (99212–99215) are for providers with prescribing authority performing medical decision-making. LCSWs, LPCs, and LMFTs bill psychotherapy codes (90832–90837) and evaluation codes (90791). If you're in a collaborative care model, speak with your billing compliance officer about Collaborative Care Management codes (99492–99494).
Q: What's the difference between 90791 and 90792? A: Both are initial psychiatric evaluations. 90791 is used by therapists and non-prescribers. 90792 is used by psychiatrists, NPs, and PAs who include medical services — such as reviewing medical history, ordering labs, or initiating medication — during the evaluation. 90792 reimburses approximately $20–$40 more than 90791.
Q: How do I bill for a 90-minute therapy session? A: Bill 90837 (53+ minutes). There is no separate CPT code for sessions beyond 60 minutes in standard outpatient therapy. If the session involved a crisis presentation, 90839 (+90840 for additional 30-minute increments) may apply — but document the acute crisis clearly.
Q: Do I need a separate note for E/M and psychotherapy add-on codes? A: You don't need two separate documents, but your single note must clearly delineate the two services. Show the time spent on medical evaluation/prescribing and separately document the psychotherapy intervention. Payers will deny the add-on if the note doesn't distinguish the two.
Q: Are telehealth CPT codes different from in-person codes in 2026? A: The CPT codes themselves are the same. What changes is the modifier (95 or GT), the Place of Service (02 or 10), and sometimes payer-specific billing rules. Always check your contracted payer's telehealth billing guidelines, as Aetna, BCBS, and Medicaid plans each have their own nuances.
Q: What documentation do I need to support a 90839 crisis code? A: You must document an acute psychiatric crisis — suicidal/homicidal ideation, acute psychiatric decompensation, or a situation requiring immediate intervention. Document the patient's presentation on arrival, your clinical assessment, the interventions used, the patient's response, and your safety plan or disposition. Generic "patient was upset" language will not support this code.
Q: Can group practice therapists bill under their own NPI for telehealth? A: Yes, in most cases. Each rendering provider bills under their own NPI with the group practice's billing NPI as the group/organizational NPI. Credentialing each therapist individually with each payer is still required — a common oversight that leads to denied claims.
A Quick Note on Documentation and Audit Defense
The codes above tell payers what you did. Your clinical documentation tells them why it was medically necessary and how it was delivered. In a RAC audit or payer review, you're not defending your code — you're defending your note.
Every session note should answer:
- What clinical problem were you addressing today?
- What specific intervention did you use (and is it tied to your treatment plan modality)?
- How did the patient respond?
- What does this tell you about progress toward treatment goals?
- What's the plan for next session?
That's it. If your notes answer those five questions consistently, you're in strong shape for most audits.
How Mozu Health Helps You Get This Right
Keeping up with CPT code changes, payer-specific documentation requirements, and audit defense is genuinely difficult — especially when you're also trying to see patients, run a practice, and not burn out.
Mozu Health is an AI-powered clinical documentation platform built specifically for behavioral health. Here's what that means in practice:
- AI-assisted session notes that auto-populate required documentation elements for each CPT code you select
- Built-in billing accuracy checks that flag mismatches between your note content and the code you've chosen — before the claim goes out
- HIPAA-compliant documentation storage with audit-ready formatting for all major payers
- Telehealth documentation templates with correct modifier guidance baked in
- Group practice tools that help each therapist document individually without copy-paste risk
Whether you're a solo LCSW trying to stop undercoding or a group practice director worried about a United Healthcare pre-payment review, Mozu Health's platform is designed to catch the documentation gaps that cost practices real money.
Ready to stop leaving reimbursement on the table and start documenting with confidence?
👉 Try Mozu Health free at mozuhealth.com — no credit card required.
CPT codes and Medicare reimbursement rates referenced in this guide reflect 2026 CMS Physician Fee Schedule data and standard commercial payer ranges. Always verify current rates with CMS and your contracted payers. This content is for educational purposes and does not constitute legal or billing compliance advice.
