Low impact
Transtympanic Micropressure Applications as a Treatment of Meniere Disease
Blue Cross & Blue Shield of Mississippi·Identified Jun 20, 2026
HCPCS A4638 is officially defined as "Replacement battery for patient-owned ear pulse generator, each." HCPCS A4638 is referenced in 1 tracked payer policy change from Blue Cross & Blue Shield of Mississippi. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for HCPCS A4638 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.
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