Allergy Testing - Conjunctival Challenge Test
DESCRIPTION
Conjunctival challenge test may be performed by applying a single drop of allergen solution directly to the conjunctiva or by dispensing a defined concentration of allergen into the air of an enclosed air-conditioned challenge chamber. Response assessment may involve measuring conjunctival vascular reaction to an allergen using specialized video equipment with computerized image analysis. However, evaluation of test results has traditionally relied on a subjectively determined degree of tearing, redness, swelling, or itchiness in response to the allergen.
POLICY
The conjunctival challenge test in the diagnosis of the allergic individual is considered investigational.
ADDITIONAL INFORMATION
There is a severe lack of published evidence supporting this technology.
Conjunctival challenge test does not meet the following technology evaluation criteria:
The scientific evidence must permit conclusions concerning the effect of the technology on health outcomes.
The technology must improve the net health outcome.
The technology must be as beneficial as any established alternatives.
The improvement must be attainable outside the investigational settings.
SOURCES
BlueCross BlueShield Association. Medical Policy Reference Manual. (1:2003). Allergy testing (2.01.23). Retrieved August 27, 2003 from BlueWeb.
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EFFECTIVE DATE |
5/25/2006 |
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Policies included in the Medical Policy Manual are not intended to certify coverage availability. They are medical determinations about a particular technology, service, drug, etc. While a policy or technology may be medically necessary, it could be excluded in a member's benefit plan. Please check with the appropriate claims department to determine if the service in question is a covered service under a particular benefit plan. Use of the Medical Policy Manual is not intended to replace independent medical judgment for treatment of individuals. The content on this Web site is not intended to be a substitute for professional medical advice in any way. Always seek the advice of your physician or other qualified health care provider if you have questions regarding a medical condition or treatment.
This document has been classified as public information.