AAN Policy on Use of Magnetoencephalography in Clinical Practice

March 18, 2011

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The Medical Economics and Management Committee of the AAN recently completed work to develop a medical policy for the use of MEG in clinical practice. MEG offers a non-invasive test for localization in eloquent cortex that is useful in pre-surgical brain mapping in patients with epilepsy, brain tumors, and vascular malformations. ICD-9 codes that support medical necessity, those that do not, and procedure codes are discussed in the policy.

Procedure Codes:

95965 Magnetoencephalography (MEG), recording and analysis; for spontaneous brain magnetic activity (e.g., epileptic cerebral cortex localization)

95966 Magnetoencephalography (MEG), recording and analysis; for evoked magnetic fields, single modality (e.g., sensory, motor, language, or visual cortex localization)

95967 Magnetoencephalography (MEG), recording and analysis; for evoked magnetic fields, each additional modality (e.g., sensory, motor, language, or visual cortex localization) (list separately in addition to code for primary procedure)

Read the new policy.