NGC is an initiative of the Agency for Healthcare Research and Quality (AHRQ) 
, U.S. Department of Health and Human Services. NGC was originally created by AHRQ in partnership with the American Medical Association and the American Association of Health Plans (now America’s Health Insurance Plans [AHIP]).
Nervous System Neoplasms (25)
Narrow:
Central Nervous System Neoplasms (22)
Cranial Nerve Neoplasms (2)
Neuroma, Acoustic (1)
Peripheral Nervous System Neoplasms (1)
http://www.guideline.gov/browse/by-topic-detail.aspx?id=13298&ct=1
