Transcranial Magnetic Stimulation or TMS therapy is widely used by Psychiatrists to treat certain types of Major Depressive Disorder in adult patients. While it is the provider’s responsibility to determine whether a patient may benefit from TMS treatment, it is the job of the biller to process all paperwork for pre and post-visit follow-up for TMS therapy. The secret to successful claim payment is in the detailed work done by the billing department.
Insurance Coverage for TMS Therapy
Most insurance with mental health benefits will cover TMS therapy when deemed necessary. One major exception is Medicaid. Billers need to check with local Medicaid providers for TMS coverage verification. The patient’s previous medical records need to indicate all methods of treatment done for the condition and how TMS therapy will improve the depressive disorder.
Insurance coverage for TMS therapy varies significantly across different payers. Generally, coverage is granted under the following conditions:
- The patient has a diagnosis of major depressive disorder (MDD).
- The patient has not responded to traditional treatments, including antidepressants and psychotherapy.
- The patient has undergone a certain number of prior therapy sessions without significant improvement.

Is Pre-authorization Required for TMS Therapy?
Before starting TMS therapy, obtaining pre-authorization from the patient’s insurance is essential.
I would encourage providers not to solely depend on auto-verification. Online verification for coverage often gives incorrect information for the necessity of pre-authorization. Calling the insurance’s pre-authorization department will be worth your time. Prepare a cheat sheet of questions to ask when you call. Insurances many times will ask for supporting documentation.
This process involves submitting documentation that includes:
- Detailed patient history and diagnosis.
- Evidence of previous treatments and their outcomes.
- A treatment plan for TMS therapy.
Billing Codes and Documentation
CPT Codes
Current Procedural Terminology (CPT) codes are used for billing TMS therapy. The primary codes include:
- CPT 90867: Initial TMS session, including the mapping of the motor cortex.
- CPT 90868: Subsequent TMS treatment sessions.
- CPT 90869: Re-mapping of the motor cortex during treatment.
These codes must be used accurately, and detailed documentation must support the need for TMS therapy. Correct documentation will ensure proper reimbursement and avoid claim denials or payment retractions.
ICD-10 Codes
International Classification of Diseases (ICD-10) codes are used to indicate the patient’s diagnosis. Common codes associated with TMS therapy include:
- F32.2: Major depressive disorder, single episode, severe without psychotic features.
- F33.2: Major depressive disorder, recurrent severe without psychotic features.
Documentation Requirements
Proper documentation is vital for billing TMS therapy. Key elements include:
- Patient consent forms.
- Detailed treatment plans.
- Session notes documenting the treatment delivered.
- Progress notes to monitor patient response and adjust treatment plans as necessary.
Modifiers for TMS Billing
Modifiers play an important role in TMS billing by providing additional information that helps to accurately describe the services rendered. “Modifier 25” might be used, although rarely, to indicate a separately identifiable evaluation and management (E/M) service was provided on the same day as the TMS therapy session. It helps to distinguish the E/M service from the TMS therapy itself, ensuring proper reimbursement for both. Another modifier used in TMS billing is the “modifier 59,” which might be utilized sometimes to identify distinct procedural services performed during the same session or on the same day. This modifier is helpful when multiple TMS therapy sessions or different types of TMS therapies are provided concurrently.
Proper use of modifiers in TMS billing ensures accurate coding, appropriate reimbursement, and adherence to billing regulations and guidelines. It is essential for TMS therapy providers to stay updated on the latest coding guidelines and consult with payers to ensure the correct application of modifiers for accurate billing.

Billing for TMS Therapy
Billing for TMS therapy begins with gathering essential documentation, such as patient intake forms, consent forms, and diagnosis/treatment plans. Accurate and complete patient information is crucial for proper TMS billing. It is important to verify insurance coverage and obtain necessary authorizations or pre-certifications before initiating TMS therapy. Proper coding is essential, utilizing the appropriate CPT codes for TMS therapy services. Timely and accurate documentation of each therapy session, including progress notes and treatment logs, is necessary to support the medical necessity of the treatment.
The billing process typically involves submitting claims to insurance companies, abiding by their specific guidelines and requirements. Regular follow-up and communication with insurance can help resolve most billing issues or claim denials. Overall, efficient and accurate billing practices ensure that TMS therapy providers can receive contracted reimbursement for the valuable services they offer.
Avoiding Billing Errors for TMS Therapy
Effective billing is the key to account success for Transcranial Magnetic Stimulation (TMS) providers. However, like any billing process, TMS billing is prone to errors which can lead to administrative hassles, payment delays, and financial loss. One common TMS billing error is incorrect coding, where the wrong codes are used for procedures or services provided. This can result in denied claims and delays in payment. To avoid this, it is essential to stay updated with the latest coding guidelines and regularly train staff on proper coding practices.
Another error is insufficient documentation, where essential details are missing or incomplete. It is crucial to ensure comprehensive documentation of patient information, treatment plans, and progress notes to support the billed services. Additionally, failing to verify insurance coverage for TMS therapy or neglecting to follow up on outstanding claims can lead to missed reimbursements. Implementing a robust system for insurance verification for TMS treatment and diligently tracking claims can help avoid such errors. By proactively addressing these common billing errors, providers can streamline their billing processes, minimize financial risks, and ensure optimal reimbursement.


Estimated Reimbursements for TMS Therapy:
| TMS CPT Code | Tricare | Commercial Insurance |
| 90867 | $400 | $300 |
| 90868 | $250-300 | $170-250 |
| 90869 | $350-400 | $250-300 |
Success in Billing for TMS Therapy
Successful TMS billing is crucial for ensuring the efficient and accurate reimbursement of TMS therapy services. It requires thorough documentation, including patient intake forms, consent forms, and diagnosis/treatment plans, to support the medical necessity of the treatment. Proper coding and adherence to insurance guidelines are essential to avoid TMS claim denials and delays in reimbursement. Timely and accurate documentation of each TMS therapy session, along with progress notes and treatment logs, helps provide a comprehensive overview of the treatment course.
Regular communication and follow-up with insurance providers can help resolve any billing issues that may arise. By implementing these practices, TMS therapy providers can navigate the billing process effectively, ensuring transparent financial transactions and facilitating access to this valuable therapeutic modality for patients in need.
If your practice is having difficulty in getting payment for TMS therapy or having any other Behavioral Health claim payment issues, please feel free to contact us so that we can assist you in navigating through the insurance maze.
