Summary & Overview
CPT 90869: TMS Subsequent Motor Threshold Redetermination
CPT code 90869 denotes a subsequent redetermination of the minimum intensity of electrical pulses necessary to elicit the desired brain response during therapeutic transcranial magnetic stimulation (TMS). This service is performed when ongoing management of TMS is required, commonly for patients with depression who have not responded to medications. The code captures both the measurement of motor threshold and the delivery and management of therapy adjustments, making it central to billing for follow-up TMS sessions.
Key national payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for 90869, payer coverage patterns, common billing modifiers, and related service considerations. The publication also summarizes benchmark reimbursement practices and recent policy updates that affect how follow-up TMS threshold determinations are documented and billed.
The material is intended to help billing managers, clinical program leads, and policy analysts understand the role of 90869 in ongoing TMS treatment, typical sites of service, and what to expect from major payers. Data not available in the input is identified explicitly in relevant sections.
Billing Code Overview
CPT code 90869 describes a subsequent redetermination of the minimum intensity of electrical pulses required to elicit the therapeutic response during transcranial magnetic stimulation (TMS). The procedure involves measuring and adjusting the intensity of magnetic pulses and delivering and managing TMS therapy based on those findings.
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Service type: Therapeutic transcranial magnetic stimulation (TMS) subsequent motor threshold redetermination and management
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Typical site of service: Outpatient specialty clinic or hospital outpatient department where TMS therapy for depression is provided
Clinical & Coding Specifications
Clinical Context
A 38-year-old patient with treatment-resistant major depressive disorder is referred for therapeutic transcranial magnetic stimulation (TMS) after failing multiple antidepressant trials. The patient presents to an outpatient neuromodulation clinic housed within a psychiatry or neurology practice. Pre-procedure evaluation includes psychiatric assessment, review of prior treatments, medication reconciliation, and screening for contraindications (for example, intracranial metal, implanted electronic devices, seizure risk). Baseline motor threshold (resting motor threshold) was determined at the initial course. During a follow-up treatment session, the TMS physician or qualified provider performs a subsequent re‑determination of the minimum stimulus intensity required to elicit the desired cortical motor response, documents findings, adjusts device parameters, and oversees delivery of the therapy per protocol. Typical site of service is an outpatient hospital clinic, freestanding outpatient neuromodulation center, or an office-based psychiatric practice. The encounter includes focused mental status review, documentation of treatment response or adverse effects, procedural determination of stimulus intensity, device reprogramming, and supervision of therapeutic TMS delivery. Billing for this service uses 90869 for the subsequent determination of stimulation intensity during ongoing therapeutic TMS for depression.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 |