TMS denied as non-formulary by Cigna?

Cigna's specific coverage criteria for tms are defined in its own published medical/coverage policy and the FDA-approved prescribing label. A successful appeal documents that your medical records satisfy each criterion those sources list — confirmed diagnosis, any required prior treatments (with dates and outcomes), and clinical severity. If the exact criteria weren't included with your denial, request them in writing; your appeal then maps each requirement to the matching fact in your chart.

## Why Cigna Issues a Non-Formulary Denial for TMS

Transcranial Magnetic Stimulation is a procedure, not a pharmacy drug, so a "non-formulary" denial in this context typically means Cigna has determined that TMS falls outside the covered benefits or covered-procedure list under your specific plan. This can happen because TMS coverage is plan-specific: some Cigna plans explicitly cover TMS as a medical benefit while others exclude it or require separate authorization. The denial may also reflect a coding or benefit-category mismatch — TMS billed under one code may be covered while a different code for the same procedure is not.

## Your Appeal Rights

Under ACA §2719 and ERISA §503, you have the right to a full internal appeal and, if unsuccessful, an independent external review. The external review is conducted by a reviewer with no financial relationship with Cigna. You typically have approximately 180 days from the denial notice to initiate an internal appeal. Expedited review is available when standard timelines would seriously jeopardize your health.

## What to Gather

• Your Summary Plan Description (SPD) or Evidence of Coverage: Review the mental health and medical benefits sections for any language about neuromodulation, brain stimulation, or TMS specifically.
• The denial letter: Confirm which benefit category Cigna applied and which they claim TMS does not fit.
• Correct procedure coding: Ask your provider to confirm the exact CPT code(s) billed and whether an alternative code might be covered.
• Prescriber letter: Your treating clinician should explain the medical rationale and reference Cigna's own mental health coverage obligations under the Mental Health Parity and Addiction Equity Act (MHPAEA).
• MHPAEA parity argument: If Cigna covers analogous non-drug medical procedures for physical health conditions, federal parity law may require equivalent coverage for this mental health treatment. Ask Cigna in writing for the specific coverage criteria they apply to comparable medical/surgical procedures.

## Criteria-Mapping Structure

Request Cigna's written explanation of which plan benefit section excludes TMS. Then build a table:

| Issue | Your Response | |---|---| | Benefit category applied by Cigna | [Quote from denial letter] | | Correct benefit category per SPD | [Quote from your plan document] | | Parity obligation | [Identify comparable covered procedure for physical condition] | | Prescriber medical necessity | [Attach prescriber letter] |

A non-formulary or non-covered denial is often resolved when the correct procedure code is applied or when a parity argument is formally raised.