All PlansCoverageLow impact

Diagnosis and Management of Idiopathic Environmental Intolerance (i.e. Multiple Chemical Sensitivities)

Q: Who is affected by this change?

This affects Blue Cross & Blue Shield of Mississippi Allergy & Immunology, Internal Medicine, Family Medicine, Gastroenterology providers in MS on All Plans plans.

Blue Cross & Blue Shield of Mississippi·MS · Allergy & Immunology, Internal Medicine, Family Medicine +1 more·Medical Policy

Effective date

Not stated

We identified it

Jun 20, 2026

Days to comply

—

Summary

This policy confirms that all diagnostic tests, nutritional assessments, and treatments for idiopathic environmental intolerance (multiple chemical sensitivities) are considered investigational and not covered. No specific billing codes are mentioned, but all related services would be denied.

Action Required

Action needed

Immediately: Billing team should identify any patients being treated for idiopathic environmental intolerance or multiple chemical sensitivities and inform providers that related diagnostic tests, nutritional assessments, and treatments are considered investigational and will not be covered by insurance. Document non-coverage discussions with patients before providing services.

Related policy hubs

Blue Cross & Blue Shield of Mississippi policies MS policy changes Allergy & Immunology Internal Medicine Family Medicine Gastroenterology