Are refused TMS claims, improper CPT code selection, or incomplete documentation causing reimbursement delays? Accurate reporting of the TMS CPT code is critical for psychiatrists, TMS practices, and medical billing departments. Medicare continues to reimburse transcranial magnetic stimulation (TMS) for qualified patients with severe major depressive disorder when medical necessity and coverage criteria are met. Therefore, proper coding and documentation are necessary for payment.
This guide discusses the TMS CPT codes 90867, 90868, and 90869, including their explanations, billing regulations, documentation standards, reimbursement concerns, ICD-10-CM diagnosis coding, and Medicare compliance. It also discusses frequent coding problems, NCCI billing issues, and payer expectations that can influence claim approval.
By the end of this article, you will understand when to report each TMS CPT code, which documentation supports medical necessity, and how to reduce claim denials while maintaining compliance.
What Is a TMS CPT Code?
A TMS CPT code is a Current Procedural Terminology (CPT) code used to report medically necessary transcranial magnetic stimulation (TMS) services for eligible patients. These codes identify the specific stage of treatment performed and help Medicare, Medicaid, and commercial insurers determine coverage and reimbursement.
The American Medical Association (AMA) assigns CPT codes, while Medicare and other payers apply their own coverage policies and documentation requirements. For TMS therapy, providers commonly report CPT codes 90867, 90868, and 90869, with each code representing a distinct service during a patient’s treatment course.
Using the correct TMS CPT code helps healthcare organizations:
- Report the appropriate TMS service performed.
- Support medical necessity with complete documentation.
- Reduce coding and billing errors.
- Improve claim acceptance and reimbursement.
- Maintain compliance with Medicare and payer billing policies.
When Is TMS Medically Necessary?
Transcranial magnetic stimulation (TMS) is considered medically necessary when a patient meets the clinical and payer-specific treatment criteria. Medicare and many commercial insurers generally cover TMS for adults with major depressive disorder (MDD) who have not improved significantly after appropriate antidepressant therapy and psychotherapy, as long as the treatment is supported by clinical documentation and medical necessity criteria.
To support medical necessity, providers should document:
1. A confirmed diagnosis that meets payer coverage requirements.
2. The patient’s history of antidepressant treatment and clinical response.
3. Previous behavioral health interventions, when applicable.
4. A comprehensive psychiatric evaluation.
5. The treatment plan, expected goals, and physician order.
6. Clinical evidence supporting the use of TMS instead of alternative therapies.
Who Can Bill TMS Services?
TMS services are commonly billed by qualified healthcare professionals and organizations that meet federal, state, and payer-specific requirements. Billing responsibilities depend on provider credentials, scope of practice, and the applicable insurance policy.
Healthcare professionals and facilities that commonly bill TMS services include:
1. Psychiatrists
2. Physicians trained in TMS therapy
3. Hospital outpatient behavioral health departments
4. Mental health clinics
5. TMS treatment centers
6. Physician group practices
TMS CPT Codes Explained
Each TMS CPT code identifies a specific service performed during a patient’s transcranial magnetic stimulation treatment. Selecting the correct code supports accurate billing, proper reimbursement, and compliance with Medicare and payer documentation requirements.
CPT Code 90867 Description
CPT code 90867 is reported for the initial TMS treatment session. It includes the psychiatric evaluation related to treatment planning, determination of the motor threshold, delivery of the first treatment, and management of the session. This code is generally billed once per treatment course and establishes the baseline treatment settings.
Providers should document:
- Medical necessity for TMS therapy.
- Motor threshold determination.
- Initial treatment parameters.
- Physician assessment and treatment plan.
- Patient response to the first session.
CPT Code 90868 Description
CPT code 90868 is used for each subsequent TMS treatment session after the initial visit. It covers the delivery and management of repetitive transcranial magnetic stimulation using the previously established treatment settings.
For accurate 90868 CPT code reimbursement, documentation should include:
- Date of service.
- Treatment session details.
- Patient sensitivity and clinical response.
- Any changes affecting treatment.
- Physician or qualified provider supervision, when required by the payer.
This code is typically reported for each eligible follow-up treatment session during the approved course of therapy.
CPT Code 90869 Description
The 90869 CPT code description applies to the re-determination of the motor threshold, followed by the delivery and management of a TMS treatment session. Providers report this code when a patient’s clinical condition requires reassessment of stimulation intensity and adjustment of treatment parameters.
Before reporting CPT 90869, documentation should clearly support:
- The reason for motor threshold re-determination.
- Updated treatment settings.
- Medical necessity for the adjustment.
- Physician findings and treatment records.
TMS CPT Code Comparison Table
The three TMS CPT codes represent different stages of transcranial magnetic stimulation treatment. Selecting the correct code depends on the service performed, clinical documentation, and Medicare or payer billing requirements.
| TMS CPT Code | Description | When to Report | Billing Frequency |
| 90867 | Initial TMS treatment, including motor threshold determination, delivery, and management | First treatment session after the patient qualifies for TMS therapy | Report once per treatment episode and generally not more than once within six weeks |
| 90868 | Subsequent TMS treatment delivery and management | Each eligible follow-up treatment session after the initial treatment | One unit per treatment session on the date of service |
| 90869 | Motor threshold re-determination with treatment delivery and management | When the patient’s motor threshold requires reassessment because of a clinical change | One unit on the date the reassessment is performed |
ICD-10-CM Diagnosis Codes for TMS
Correct ICD-10-CM diagnosis coding is essential when reporting a TMS CPT code. The diagnosis must support medical necessity and align with Medicare or payer coverage policies before a claim is submitted.
Covered Depression Diagnosis Codes
Medicare Administrative Contractors (MACs) generally recognize specific ICD-10-CM diagnosis codes for transcranial magnetic stimulation (TMS) when coverage criteria are met. Under CMS billing and coding guidance, commonly covered diagnosis codes include:
| ICD-10-CM Code | Diagnosis Description |
| F32.2 | Major depressive disorder, single episode, severe without psychotic features |
| F33.2 | Major depressive disorder, recurrent, severe without psychotic features |
Medical Necessity Requirements
A covered diagnosis alone does not guarantee reimbursement. The medical record should clearly demonstrate that TMS therapy is medically necessary based on the patient’s clinical condition and payer requirements.
Documentation should support:
1. A confirmed diagnosis of major depressive disorder.
2. History of previous antidepressant treatment and clinical response.
3. Psychiatric evaluation completed before treatment.
4. Physician’s treatment plan and expected clinical goals.
5. Medical reason for selecting TMS therapy.
Documentation Supporting Diagnosis
Complete documentation helps support the reported TMS CPT code and ICD-10-CM diagnosis during claim review or audit. The patient’s medical record should include:
1. Psychiatric evaluation and diagnosis.
2. Relevant clinical history.
3. Medication and psychotherapy history.
4. Treatment plan and physician order.
5. Progress notes for each treatment session.
6. Signed and dated provider documentation.
Documentation Requirements for TMS Billing
Complete documentation supports medical necessity, accurate TMS CPT code reporting, and payer compliance. Each record should clearly show the service performed, the patient’s clinical status, and the provider’s medical decision-making.
Initial Psychiatric Evaluation
The patient’s record should begin with a comprehensive psychiatric evaluation before TMS therapy starts. This evaluation establishes medical necessity and confirms that the patient meets the payer’s coverage criteria.
The evaluation should include:
- Confirmed psychiatric diagnosis.
- History of present illness.
- Previous antidepressant medications and treatment response.
- Previous psychotherapy or other behavioral health treatments.
- Mental test status.
- Clinical rationale for recommending TMS therapy.
- Individualized treatment plan.
Motor Threshold Documentation
Motor threshold determination is required before the initial treatment and whenever reassessment is clinically indicated. The documentation should support the reported TMS CPT code and explain any adjustment to treatment settings.
The medical record should include:
- Date of motor threshold testing.
- Stimulation parameters used.
- Motor threshold value.
- Coil placement details.
- Clinical reason for threshold re-determination, if performed.
- Updated treatment settings when applicable.
Treatment Session Notes
Each treatment session should contain a separate progress note that accurately reflects the service provided. Consistent documentation supports claim submission and helps verify medical necessity during payer review.
Treatment notes should document:
- Date of service.
- Reported CPT code.
- Treatment parameters.
- Duration of the session, when required by the payer.
- Patient tolerance and any adverse effects.
- Clinical observations during the visit.
- Changes made to treatment settings, if applicable.
Progress Monitoring
Providers should evaluate the patient’s clinical response throughout the treatment course. Periodic assessments help determine whether therapy remains medically necessary and whether treatment adjustments are appropriate.
Progress monitoring should include:
- Changes in depressive symptoms.
- Standardized assessment scores, when used.
- Functional improvement.
- Treatment response over time.
- Clinical justification for continuing or modifying therapy.
Physician Signature Requirements
Every TMS billing record should include a legible signature from the treating physician or other qualified healthcare professional, consistent with payer requirements. Electronic signatures must comply with applicable Medicare and organizational documentation standards.
The signed record should identify:
- Treating provider’s name and credentials.
- Date of service.
- Date of signature.
- National Provider Identifier (NPI), when required.
- Complete authentication of the medical record.
90868 CPT Code Reimbursement
Accurate reporting of CPT code 90868 helps support timely reimbursement for subsequent TMS treatment sessions. Payment depends on correct coding, complete documentation, medical necessity, and each payer’s billing policy.
Factors Affecting Reimbursement
Multiple factors affect CPT code 90868 reimbursement. Meeting payer requirements before claim submission reduces the likelihood of payment delays or denials.
Key reimbursement factors include:
- Medical necessity supported by clinical documentation.
- Correct use of CPT code 90868 for subsequent treatment sessions.
- Covered ICD-10-CM diagnosis code.
- Prior authorization, when required.
- Compliance with Medicare Local Coverage Determinations (LCDs) and commercial payer policies.
- Complete provider documentation for each visit.
Place of Service
The place where TMS services are performed can affect reimbursement and billing requirements. Providers should report the appropriate Place of Service (POS) code that matches the treatment setting.
Common treatment locations include:
- Physician offices.
- Outpatient mental health clinics.
- Hospital outpatient departments.
- Behavioral health treatment centers.
Each payer may apply different reimbursement rates or billing rules based on the reported place of service.
Payer Variations
Reimbursement for CPT code 90868 differs among Medicare, Medicaid, and commercial insurers. Every provider sets its own coverage policies, documentation standards, and prior authorization requirements, which can change over time.
Before treatment begins, practices should verify:
- Patient eligibility and active benefits.
- Covered diagnosis requirements.
- Prior authorization status.
Session limits or frequency restrictions.
Current reimbursement policy.
Clean Claim Practices
Submitting complete and accurate claims improves the likelihood of prompt reimbursement. Every claim should match the patient’s medical record and payer billing requirements.
Follow these practices before claim submission:
- Report the correct TMS CPT code and ICD-10-CM diagnosis.
- Confirm that documentation supports medical necessity.
- Verify provider enrollment and credentialing status.
- Review National Correct Coding Initiative (NCCI) edits.
- Confirm patient insurance eligibility and authorization.
- Check claims for coding or demographic errors before submission.
Conclusion
Accurate use of the TMS CPT code requires proper CPT code selection, complete documentation, correct ICD-10-CM diagnosis coding, and compliance with Medicare and payer-specific billing requirements. Following current coding guidelines helps reduce claim denials, supports timely reimbursement, and strengthens billing accuracy throughout the TMS treatment course.
Understanding the differences between CPT codes 90867, 90868, and 90869, along with medical necessity, documentation standards, and reimbursement rules, enables mental health providers and billing teams to submit compliant claims with greater confidence. Regularly reviewing CMS guidance and payer policies also helps practices maintain coding accuracy and prepare for audits.
FAQs
What is the TMS CPT code used for?
The TMS CPT code is used to report transcranial magnetic stimulation services for eligible patients. It identifies the specific treatment stage for accurate billing, reimbursement, and payer compliance.
What is the difference between CPT codes 90867, 90868, and 90869?
CPT 90867 is for the initial treatment with motor threshold determination, 90868 is for subsequent treatment sessions, and 90869 is used when motor threshold re-determination is medically necessary.
Which ICD-10-CM diagnosis codes are commonly reported with TMS services?
Common diagnosis codes include F32.2 (Major depressive disorder, single episode, severe without psychotic features) and F33.2 (Major depressive disorder, recurrent, severe without psychotic features), depending on payer coverage policies.
What documentation is required for TMS billing?
Documentation should include a psychiatric evaluation, a medical necessity determination, a motor threshold determination, treatment session notes, progress assessments, and the treating provider’s signed clinical records.
What factors affect 90868 CPT code reimbursement?
Reimbursement depends on medical necessity, accurate CPT and ICD-10-CM coding, complete documentation, prior authorization (if required), place of service, and individual payer reimbursement policies.
