Phrenic Nerve Stimulation for Central Sleep Apnea
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This policy governs Blue Cross Blue Shield of North Carolina's coverage stance for implantation and use of phrenic nerve stimulation devices to treat central sleep apnea in affected members and informs providers about coding and documentation expectations.
Added CPT codes 1027T, 1028T, 1029T to the Billing/Coding section effective 7/1/2026.
Coverage Criteria for Phrenic Nerve Stimulation
Initial Therapy / Coverage
Covered when ALL of the following are met
Policy explicitly states investigational; no criteria to satisfy for coverage.
The use of phrenic nerve stimulation for central sleep apnea is considered investigational in all situations and therefore excluded from coverage under this policy.
This policy considers phrenic nerve stimulation for central sleep apnea investigational and not covered. BCBSNC does not provide coverage for investigational services or procedures.
Applicable Service Codes and Billing/Coding
Provider Actions, Prior Authorization, and Documentation
Prior authorization / coding note — use listed service codes; medical records may be requested
Applicable procedure and supply codes for phrenic nerve stimulation are listed in the Billing/Coding section and must be used when submitting claims; BCBSNC may request medical records to determine medical necessity when these codes are submitted.
Stepwise treatment context — invasive option only after non‑surgical therapies tried
Phrenic nerve stimulation is an invasive procedure that would typically be considered only after non‑surgical treatments (for example CPAP, bilevel PAP, adaptive servo‑ventilation where indicated, supplemental oxygen, or pharmacologic respiratory stimulants) have been tried and failed.
- Non‑surgical first‑line options include CPAP for hyperventilation‑related CSA and bilevel PAP for hypoventilation‑related CSA; ASV and other therapies are used as clinically indicated.
- Limited data exist evaluating phrenic nerve stimulation after failure of standard therapies.
Medical records and documentation — submit full records; letters alone are insufficient
BCBSNC may request medical records to determine medical necessity; while letters of support or explanation can be useful, they are not sufficient unless they include all specific information required for the medical necessity determination.
- Provide complete medical records including the clinical rationale, prior treatments tried, treatment response, and any relevant diagnostic data when requested.
Denial risk — investigational (not covered in all situations)
Claims for phrenic nerve stimulation for central sleep apnea will be denied because the service is considered investigational in all situations and BCBSNC does not provide coverage for investigational services or procedures.
- There are no covered indications for phrenic nerve stimulation for CSA under this policy.
Background on Central Sleep Apnea and Treatment
Central sleep apnea (CSA) is a sleep-disordered breathing condition in which there are repeated reductions or pauses in airflow associated with absent or decreased ventilatory effort. CSA can be idiopathic or occur secondary to conditions such as heart failure, stroke, or opioid use. Treatments are tailored to CSA subtype and may include positive airway pressure therapies, supplemental oxygen, or pharmacologic stimulants; phrenic nerve stimulation is an invasive therapy intended to stimulate the diaphragm via the phrenic nerve, but per this policy is considered investigational for CSA.
Key Definitions
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