Mental Health CPT Reference

Mental Health CPT Codes and Reimbursement Rates

Mental health billing uses a specialized subset of CPT codes centered on psychotherapy, psychiatric evaluation, and medication management services.

Reviewed by MMBS Billing Review Team Last updated Mar 31, 2026 Published Mar 16, 2026
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Mental Health CPT Codes and Reimbursement Rates
01

Healthy session code distribution: 60-70% code 90834, 20-25% code 90837, 10-15% code 90832

02

Neuropsych testing (96132-96133) can generate $700+ for a comprehensive 6-hour evaluation

03

Collaborative Care codes (99492-99494) reimburse $130-162/month for integrated care models

04

Interactive complexity add-on (90785) at ~$15 is frequently underbilled in mental health

Overview

Why Mental Health CPT Codes Teams Need a Better Workflow

Mental health billing uses a specialized subset of CPT codes centered on psychotherapy, psychiatric evaluation, and medication management services. Codes like 90791 (diagnostic evaluation), 90834 (individual therapy, 45 min), and 90837 (individual therapy, 60 min) form the backbone of most mental health claims across outpatient settings.

This reference provides a comprehensive look at mental health CPT codes, including add-on codes for E/M services performed alongside therapy, group therapy codes, and family therapy billing rules. Each entry includes documentation requirements and common pitfalls that lead to denials.

Why Mental Health CPT Codes Teams Need a Better Workflow
Challenges

Common Mental Health CPT Codes Challenges We Solve

Every Mental Health CPT Codes team deals with payer delays, coding nuance, and collection leakage.

Healthy session code distribution: 60-70% code 90834, 20-25% code 90837, 10-15% code 90832

The workflow has to support this issue before claim submission, or it turns into avoidable rework after the payer responds.

Neuropsych testing (96132-96133) can generate $700+ for a comprehensive 6-hour evaluation

When this area is inconsistent, denial rate, payment timing, and staff follow-up effort all get worse at the same time.

Collaborative Care codes (99492-99494) reimburse $130-162/month for integrated care models

Tight documentation and coding controls here usually improve both reimbursement accuracy and operational speed.

Interactive complexity add-on (90785) at ~$15 is frequently underbilled in mental health

This is one of the first places revenue leakage shows up when specialty billing habits are not standardized.

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Guide

The Complete Guide to Mental Health CPT Codes

Quick answer

Mental health billing uses a specialized subset of CPT codes centered on psychotherapy, psychiatric evaluation, and medication management services. Codes like 90791 (diagnostic evaluation), 90834 (individual therapy, 45 min), and 90837 (individual therapy, 60 min) form the backbone of most mental health claims across outpatient settings.

This reference provides a comprehensive look at mental health CPT codes, including add-on codes for E/M services performed alongside therapy, group therapy codes, and family therapy billing rules. Each entry includes documentation requirements and common pitfalls that lead to denials.

Mental Health CPT Code Categories

Mental health billing uses a core set of CPT codes that cover psychotherapy, psychiatric services, psychological testing, and integrated behavioral health. While the code set overlaps significantly with behavioral health, mental health practices often provide a broader range of services including neuropsychological testing, intensive outpatient programs, and collaborative care management that require additional code knowledge.

The distinction between mental health and behavioral health billing is largely semantic in terms of CPT codes. Both use the same psychotherapy code series (90832-90837), the same psychiatric evaluation codes (90791-90792), and the same add-on codes for combination visits. Where mental health billing diverges is in the testing codes, crisis services, and integrated care models that are more common in mental health settings.

Psychotherapy Codes

The psychotherapy code structure mirrors behavioral health: 90832 (16-37 minutes, approximately $65 Medicare), 90834 (38-52 minutes, approximately $95), and 90837 (53+ minutes, approximately $130). Mental health practices should track their code distribution. A healthy distribution shows 60-70% of sessions billed as 90834, 20-25% as 90837, and 10-15% as 90832. Distributions skewed heavily toward 90832 suggest providers are shortening sessions or underdocumenting time.

Psychological and Neuropsychological Testing

Testing codes generate significant revenue for mental health practices that offer assessment services. Psychological testing (96130-96131) covers test administration and interpretation by a psychologist. Neuropsychological testing (96132-96133) covers more comprehensive cognitive and behavioral assessment. Both code pairs use a base code for the first hour and an add-on code for each additional hour.

96130 (first hour of psychological testing) reimburses approximately $115 under Medicare. 96132 (first hour of neuropsychological testing) reimburses approximately $125. A comprehensive neuropsychological evaluation involving 6 hours of testing can generate $700 or more in professional fees. Testing by a technician uses separate codes (96136-96139) at lower reimbursement rates.

Collaborative Care Management (CoCM)

Psychiatric Collaborative Care Model codes (99492, 99493, 99494) represent a growing revenue stream for mental health practices that partner with primary care providers. The initial month code (99492) reimburses approximately $162 for 70+ minutes of care management. Subsequent months (99493) reimburse approximately $130 for 60+ minutes. These codes require a specific care model with a treating physician, behavioral health care manager, and consulting psychiatrist.

Interactive Complexity Add-On

Code 90785 is an add-on code for interactive complexity that can be billed with psychotherapy codes when specific communication factors complicate the session. This includes involvement of third parties (parents, guardians, translators), language barriers, or emotional and behavioral interference that require additional clinical effort. The add-on reimburses approximately $15 and is frequently underbilled in mental health settings.

Health and Behavior Codes

Health and behavior assessment (96156) and intervention (96158, 96159) codes are used when mental health services address a physical health condition rather than a mental health diagnosis. These codes are billed under the medical benefit, not the mental health benefit, which can be advantageous for patients who have exhausted their mental health session limits. A psychologist working with a patient on diabetes management or chronic pain coping can bill these codes with the medical diagnosis as primary.

Common Mental Health CPT Codes and Rates

CPT Code Description Medicare Rate (Approx.)
90834 Psychotherapy, 38-52 minutes $95
90837 Psychotherapy, 53+ minutes $130
90791 Diagnostic evaluation $150
96130 Psychological testing, first hour $115
96132 Neuropsych testing, first hour $125
99492 Collaborative care, initial month $162
90785 Interactive complexity add-on $15
96156 Health behavior assessment $70

Official sources

Use these checks with payer policy, coding documentation, and remittance data before changing claim workflows.

Common Questions

Mental Health CPT Codes FAQ

Answers to the questions practice owners ask most often.

Psychological testing (96130-96131) covers personality assessment, emotional functioning, and behavioral evaluation. Neuropsychological testing (96132-96133) covers cognitive functioning, memory, attention, executive function, and brain-behavior relationships. Neuropsychological testing requires a more extensive test battery and typically takes longer, resulting in higher total reimbursement per evaluation.

Yes, if the practice operates within the CoCM model structure. This requires a treating PCP or specialist, a behavioral health care manager (who tracks patient outcomes and coordinates care), and a consulting psychiatrist. The behavioral health care manager bills the CoCM codes (99492-99494) under the treating physician NPI. The model is designed for patients with mental health conditions being managed in primary care settings.

Use health and behavior codes (96156-96159) when the primary focus of the session is a physical health condition, not a mental health diagnosis. Examples include helping a patient cope with a cancer diagnosis, managing stress related to chronic pain, or behavioral intervention for diabetes self-management. These codes bill under the medical benefit, which can be advantageous when mental health benefits are limited.

Testing administered directly by a psychologist uses codes 96130-96131 (psychological) or 96132-96133 (neuropsychological). Testing administered by a trained technician under psychologist supervision uses codes 96136-96139. Technician-administered testing reimburses at a lower rate but allows the psychologist to see other patients during the testing period, improving overall practice revenue per hour.

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