| http://www.w3.org/ns/prov#value | - Due to insufficient clinical evidence to support medical efficacy, the following services are not considered to be medically necessary and therefore will not be reimbursed by Oxford: Injection of local anesthetics and/or steroids, used as occipital nerve blocks, for the diagnosis and treatment of occipital neuralgia or headaches including migraine and cervicogenic headaches.
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