CPT Code 90833: Psychotherapy Add-on (30 minutes)

Gain insights on the 90833 CPT code for effective billing practices and streamline processes in mental health therapy.

What is CPT code 90833?

CPT code 90833 is a specific code for psychotherapy services provided in conjunction with an evaluation and management (E/M) service. This unique CPT code describes a 30-minute psychotherapy add-on service performed by the same qualified health care professional who also provides the primary E/M service during the same encounter. This code was designed to accurately capture the delivery of integrated medical services and psychiatric diagnostic evaluation and care.

The 90833 CPT code is essential for mental health providers, particularly psychiatrists, clinical nurse specialists, and physician assistants who commonly deliver both medical evaluation and mental health services during psychotherapy sessions. This add-on code allows for appropriate reimbursement of the full scope of services provided to patients with mental health conditions.

As defined, the key features of CPT code 90833 for mental health billing include:

It represents 30 minutes of psychotherapy.
It must be used in addition to a primary E/M service.
The same provider must perform both services.
It applies to individual psychotherapy only.
The time spent on psychotherapy must be separate from the time spent on the E/M service.

It notes that the 30-minute duration specified in code 90833 refers to face-to-face time with the patient, time spent in providing interactive complexity services, and this time for mental health treatment must be devoted primarily to psychotherapy that is distinct from the medical evaluation and management service.

CPT code 90833 documentation requirements

Thorough documentation is essential for supporting medical billing claims using both E/M codes and the 90833 psychotherapy add-on code. Documentation guidelines for services reported with 90833 should include:

For the E/M portion:

Chief complaint or reason for encounter
Relevant history, examination findings
Medical decision making or time spent
Medication management discussions
Medical diagnoses addressed

For the psychotherapy portion:

Therapeutic modality used
Topics/issues addressed in therapy
Patient's response to treatment
Progress toward treatment goals
Plan for future therapy sessions
Separate time spent on psychotherapy

Medical necessity documentation

Documentation must also clearly establish medical necessity for both the E/M service and the psychotherapy:

The documented diagnoses should support the need for both services
The clinical rationale for providing psychotherapy should be clear
The documentation should reflect how the therapeutic interventions address the patient's mental health condition
Progress notes should demonstrate the patient's response to treatment

CPT code 90833 billing guidelines

Proper billing and use of CPT code 90833 requires adherence to specific guidelines to ensure appropriate reimbursement and compliance with payer requirements.

To correctly bill for the 90833 add-on code, healthcare providers must:

Always report it in conjunction with an E/M code
List the E/M code first, followed by the 90833 code
Do not use modifier 25 with the add-on code (it's unnecessary for add-on codes)
Ensure the same provider performed both services
Verify that the documentation supports both services

Time considerations

The time component of CPT code 90833 is crucial for proper billing:

The 30-minute duration refers to face-to-face time delivering psychotherapy
This time must be separate from time spent on the E/M service
Minor variations in time are acceptable (typically 16-37 minutes for 30-minute codes)
Documentation should clearly indicate the time spent on psychotherapy

Other relevant codes

When providing mental health services, several related CPT codes may be relevant depending on the specific circumstances of the encounter:

90832: Psychotherapy, 30 minutes (standalone code without E/M)
90834: Psychotherapy, 45 minutes (standalone code without E/M)
90837: Psychotherapy, 60 minutes (standalone code without E/M)
90836: Psychotherapy, 45 minutes with E/M service (add-on code)
90838: Psychotherapy, 60 minutes with E/M service (add-on code)

This part is essential in the billing process to ensure proper documentation and avoid reimbursement delays.

Frequently asked questions

CPT code 90833 is an add-on code used to report psychotherapy services lasting between 16 and 37 minutes provided during a visit that also includes an evaluation and management (E/M) service. It captures skilled therapeutic interventions such as insight-oriented, behavior-modifying, or supportive psychotherapy delivered face-to-face with the patient (and/or family), alongside medical management. This code cannot be billed alone and must accompany an E/M code documenting the medical evaluation component.

Yes, CPT codes 99214 (an E/M code for an established patient visit) and 90833 can be billed together when psychotherapy is provided during the same encounter as the medical evaluation. The psychotherapy portion must be separately documented, including the time spent (minimum 16 minutes), and the E/M service must be medically necessary and distinct. Proper documentation should reflect the division of time between the E/M and psychotherapy services, and the total visit time should support both codes.

A 90833 psychotherapy session must last at least 16 minutes and up to 37 minutes to qualify for billing. This time includes direct, face-to-face therapeutic interventions with the patient (and/or family) and is counted separately from the time spent on the evaluation and management portion of the visit. Sessions shorter than 16 minutes do not meet the criteria for 90833.