Mental Health CPT Codes 2026: The Complete Billing Guide for Therapists

Overview

Mental Health CPT Codes 2026: The Complete Billing Guide for Therapists

CPT (Current Procedural Terminology) codes are standardized five-digit codes published by the American Medical Association (AMA) that mental health providers use to bill insurance for therapy sessions, evaluations, and other clinical services. The most commonly used codes in behavioral health are 90834 (45-minute individual therapy) and 90837 (60-minute individual therapy), which together account for approximately 70% of outpatient mental health claims according to CMS claims data (2025).

Key takeaways

• Mental Health CPT Codes 2026: The Complete Billing Guide for Therapists CPT (Current Procedural Terminology) codes are standardized five-digit codes published by the American Medical Association (AMA) that mental health providers use to bill insurance for therapy sessions, evaluations, and other clinical services.
• The most commonly used codes in behavioral health are 90834 (45-minute individual therapy) and 90837 (60-minute individual therapy), which together account for approximately 70% of outpatient mental health claims according to CMS claims data (2025).
• Accurate CPT coding is the foundation of getting paid for your clinical work.
• Yet many therapists either under-code (leaving money on the table) or make coding errors that lead to denials and audit risk.
• This comprehensive guide covers every CPT code you need to know for behavioral health billing in 2026.

Details

Accurate CPT coding is the foundation of getting paid for your clinical work. Yet many therapists either under-code (leaving money on the table) or make coding errors that lead to denials and audit risk.

This comprehensive guide covers every CPT code you need to know for behavioral health billing in 2026.

Understanding CPT Codes for Mental Health

Mental health CPT codes fall into seven main categories: psychiatric diagnostic evaluations (90791-90792), individual psychotherapy (90832-90837), family therapy (90846-90847), group therapy (90853), add-on codes (90785, 90833, 90836, 90838), crisis services (90839-90840), and psychological testing (96130-96139). Understanding which code to use for each service is the foundation of accurate billing and maximum reimbursement.

What Are CPT Codes?

CPT (Current Procedural Terminology) codes are five-digit codes that describe medical services. They're maintained by the American Medical Association and updated annually.

For mental health providers, the most relevant CPT codes fall into several categories:Psychiatric diagnostic evaluations (90791-90792)Psychotherapy (90832-90838)Family therapy (90846-90847)Group therapy (90853)Add-on codes (90785, 90833, 90836, 90838)Crisis services (90839-90840)Psychological testing (96130-96139)

Psychiatric Diagnostic Evaluation Codes

Psychiatric diagnostic evaluation codes 90791 and 90792 are used for initial patient assessments, with 90791 for evaluations without medical services and 90792 for evaluations that include medication evaluation or physical examination. These codes are typically billed once per patient per treatment episode, with 2026 Medicare reimbursement rates of approximately $179 and $216 respectively.

90791 - Psychiatric Diagnostic Evaluation

Use when: Conducting an initial psychiatric assessment WITHOUT medical services (no medication management, no physical exam)

Typical duration: 45-90 minutes

Documentation must include:Chief complaint/reason for evaluationHistory of present illnessPsychiatric historyMedical historySocial/developmental historyMental status examRisk assessmentDiagnosisTreatment recommendations

Who can bill: All licensed mental health providers (LCSW, LMFT, LPCC, psychologists, psychiatrists)

2026 Medicare rate: ~$179 (non-facility)

90792 - Psychiatric Diagnostic Evaluation with Medical Services

Use when: Conducting psychiatric assessment WITH medical services (medication evaluation, ordering labs, physical exam)

Typical duration: 60-90 minutes

Documentation must include:Everything required for 90791, PLUS:Physical examination elementsMedical decision-makingMedication history and current medicationsReview of relevant labs/imaging

Who can bill: Psychiatrists, psychiatric nurse practitioners, physician assistants

2026 Medicare rate: ~$216 (non-facility)

For state-specific rates, see our California reimbursement guide.

Individual Psychotherapy Codes

Individual psychotherapy codes are the three time-based CPT codes therapists use most frequently: 90832 (16-37 minutes, ~$77 Medicare rate), 90834 (38-52 minutes, ~$102 Medicare rate), and 90837 (53+ minutes, ~$153 Medicare rate). The code selection is determined entirely by face-to-face time spent with the patient, not by scheduled appointment length.

These are your primary revenue codes as a therapist.

90832 - Psychotherapy, 16-37 Minutes

Use when: Providing individual psychotherapy for 16-37 minutes face-to-face

Best for:Brief check-insFollow-up sessionsHigh-frequency, lower-intensity treatmentCrisis stabilization sessions

Documentation must include:Session start/end time or total timeInterventions usedPatient responseProgress toward goals

2026 Medicare rate: ~$77 (non-facility)

90834 - Psychotherapy, 38-52 Minutes

Use when: Providing individual psychotherapy for 38-52 minutes face-to-face

This is the "standard" therapy session code. Most practices bill this code most frequently.

2026 Medicare rate: ~$102 (non-facility)

90837 - Psychotherapy, 53+ Minutes

Use when: Providing individual psychotherapy for 53 minutes or longer

Best for:Complex presentationsTrauma processingEMDR sessionsInitial treatment sessions

Caution: Some payers require medical necessity justification for frequent 90837 billing. Document why extended sessions are clinically indicated.

2026 Medicare rate: ~$153 (non-family)

Time-Based Coding: Getting It Right

Time-based coding for psychotherapy counts only face-to-face time spent delivering psychotherapy to the patient. Pre-session record review, post-session note writing, phone calls, and care coordination do not count toward the time used to select the CPT code. According to the AMA's CPT codebook (2026 edition), incorrectly counting non-face-to-face time is one of the most common coding errors in behavioral health.

What Counts Toward Psychotherapy Time?

DOES count:Face-to-face psychotherapy with the patientFamily members participating in session (use 90847 if family focus)

DOES NOT count:Reviewing records before sessionWriting notes after sessionPhone calls to coordinate careTime patient is in waiting roomBreaks during session

Documenting Time

Best practice: Record actual start and end times.

Example: "Session began at 2:00 PM and ended at 2:48 PM. 48 minutes of face-to-face psychotherapy provided."

See our SOAP notes guide for complete documentation templates.

Family Therapy Codes

Family therapy CPT codes 90846 and 90847 distinguish whether the identified patient is present during the session: 90846 is used when meeting with family members alone, and 90847 is used when the patient participates. Confusing these two codes is one of the most common billing errors in outpatient mental health, according to OIG audit findings (2024).

90846 - Family Psychotherapy Without Patient Present

Use when: Meeting with family members to address issues affecting the identified patient, but the patient is NOT in the session.

Common scenarios:Parent consultation for child therapyFamily psychoeducationCoordinating care with spouse/partner

2026 Medicare rate: ~$124 (non-facility)

90847 - Family Psychotherapy With Patient Present

Use when: Conducting family therapy with the identified patient AND one or more family members.

This is the code for couples therapy when one partner is the identified patient.

2026 Medicare rate: ~$129 (non-facility)

Group Therapy Codes

Group therapy is billed using CPT code 90853, which is billed per patient per session regardless of session length. The 2026 Medicare non-facility rate for 90853 is approximately $32 per patient, meaning a group of 8 clients generates roughly $256 in billable revenue per session. Ease Health's group therapy billing module automatically creates individual claims for each group participant, eliminating manual entry errors.

90853 - Group Psychotherapy

Use when: Providing group psychotherapy (not a family)

Billing rules:Bill per patient, per sessionMinimum group size varies by payer (typically 2-3 patients)Maximum group size varies (often 12-15 patients)Same CPT code regardless of session length

2026 Medicare rate: ~$32 per patient (non-facility)

Add-On Codes

Add-on codes are billed IN ADDITION to a primary code. They cannot be billed alone.

90785 - Interactive Complexity

Use when: Communication difficulties significantly impact the session.

Qualifies for 90785 when ANY of these are present:Need to involve third parties (parents of minors, guardians, interpreters)Patient has communication barriers (cognitive impairment, sensory deficits)Emotional/behavioral interference requiring managementPatient has engagement difficulties requiring specific strategies

Common qualifying scenarios:Child therapy requiring parent involvementCouples therapy with high conflictPatient with interpreterPatient with significant cognitive limitations

Bill with: 90791, 90792, 90832, 90834, 90837, 90846, 90847, 90853

2026 Medicare rate: ~$15 (add-on)

90833, 90836, 90838 - Psychotherapy Add-Ons to E/M

Use when: Providing psychotherapy in the same session as an E/M service (medication management).

Who uses these: Psychiatrists, NPs, PAs who do combined med management + therapy

Crisis Psychotherapy Codes

90839 - Psychotherapy for Crisis, First 60 Minutes

Use when: Providing crisis psychotherapy for life-threatening or complex psychiatric emergencies.

This is NOT for:Routine sessions with anxious patientsPatients who are upset but stableScheduling emergencies or fitting in urgent appointments

IS appropriate for:Active suicidal ideation with plan/intentAcute psychotic decompensationSevere panic/dissociation requiring immediate intervention

90840 - Psychotherapy for Crisis, Each Additional 30 Minutes

Use with: 90839 for crisis sessions lasting longer than 60 minutes.

Telehealth Modifiers

Telehealth therapy sessions use the same CPT codes as in-person sessions but require additional modifiers: modifier 95 for synchronous audio-video telehealth and modifier 93 for audio-only telephone sessions. The Place of Service (POS) code should be 10 when the patient is at home or 02 when the patient is at a healthcare facility.

When billing for telehealth services:

Place of Service codes:02 = Telehealth (patient at distant site)10 = Telehealth provided to patient's home

For telehealth billing details, see our telehealth guide or California telehealth regulations.

Common Coding Mistakes to Avoid

The five most common CPT coding mistakes in mental health billing are under-coding, routinely billing 90837 without justification, missing add-on codes like 90785, confusing family therapy codes 90846 and 90847, and using 90791 for follow-up evaluations. According to the OIG (Office of Inspector General, 2024), coding errors account for approximately 12% of all mental health claim denials.

Mistake 1: Under-Coding

Problem: Billing 90834 when session was actually 55 minutes

Solution: Document actual time. If you provided 53+ minutes, bill 90837.

Mistake 2: Billing 90837 Without Justification

Problem: Routinely billing 90837 without clinical rationale

Solution: Document why extended sessions are medically necessary. Vary session length based on clinical need.

Mistake 3: Missing Add-On Codes

Problem: Not billing 90785 when sessions qualify

Solution: Review 90785 criteria for every session. Many child/adolescent and couples sessions qualify.

Mistake 4: Incorrect Family Therapy Coding

Problem: Billing 90847 when patient isn't present (should be 90846)

Solution: 90847 = patient present; 90846 = patient absent. Bill accordingly.

Mistake 5: Billing 90791 for Follow-Up Evaluations

Problem: Using diagnostic eval code for re-assessments

Solution: 90791 is typically for initial evaluations only. Use psychotherapy codes for ongoing sessions, even if diagnostic reassessment occurs.

For more on preventing billing errors that lead to denials, see our claim denials guide.

Frequently Asked Questions

What CPT code should I use for a 45-minute therapy session?

90834 (Psychotherapy, 38-52 minutes). This is the appropriate code for sessions lasting 38-52 minutes face-to-face.

Can I bill 90837 for every session?

You can, but you shouldn't unless clinically indicated. Routinely billing only 90837 may trigger audits. Vary codes based on actual session length and clinical need.

What's the difference between 90846 and 90847?

90846 is family therapy WITHOUT the patient present (e.g., parent consultation). 90847 is family therapy WITH the patient present (e.g., family session, couples therapy with identified patient).

Do I need to use modifier 95 for telehealth?

Yes, most payers require modifier 95 for synchronous telehealth services. Use modifier 93 for audio-only telephone sessions where permitted. See our telehealth guide for details.

Can I bill for reviewing records or writing notes?

No. CPT psychotherapy codes are based on face-to-face time with the patient only. Documentation time is not separately billable for most outpatient services.

Where can I find current Medicare rates for these codes?

The CMS Physician Fee Schedule Look-Up Tool provides current Medicare rates by code and geographic area.

Want to ensure you're coding correctly and maximizing reimbursement? Ease Health's billing platform includes built-in code validation and helps you capture all billable services. Schedule a demo to see how we can help.

Related Glossary TermsCPT Codes — Understanding procedural terminology for behavioral health billingRevenue Cycle Management — The full billing lifecycle from scheduling to collectionsSuperbill — Creating compliant superbills for out-of-network reimbursementERA — Electronic Remittance Advice and payment reconciliationClaim Denial — Why claims get denied and how to prevent common errors

Related GuidesBest EHR for Mental Health Practices — Compare EHR systems with built-in billing code validationEase Health vs SimplePractice — See how billing features compare side-by-side

Next steps

• Review the key takeaways and adapt them to your practice workflow.
• Use the details section as a checklist when you implement or troubleshoot.
• Share this with your billing or admin team to align on process and terminology.