Spinal stenosis (central, lateral recess or foraminal stenosis) graded as moderate, moderate to severe or severe (not mild or mild to moderate) with unremitting pain, with stenosis confirmed by imaging studies (e.g., CT or MRI) at the level corresponding to neurological findings, where symptoms have failed to respond to six weeks conservative therapy Footnote1* (unless there is evidence of cord compression, or other indications for waiver of requirements for conservative management, noted below) or.Synovial cysts, Tarlov cysts (also known as perineurial cysts and sacral meningeal cysts), or arachnoid cysts causing spinal cord or nerve root compression with unremitting pain, confirmed by imaging studies (e.g., CT or MRI) and with corresponding neurological deficit, where symptoms have failed to respond to six weeks of conservative therapy Footnote1* (unless there is evidence of cord compression, or other indications for waiver of requirements for conservative management, noted below) or.Epidural hematomas confirmed by imaging studies (e.g., CT or MRI) or.Spinal tumor confirmed by imaging studies (e.g., CT or MRI) or.Spinal infection confirmed by imaging studies (e.g., CT or MRI) or.
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