DoDI 6490.13: Comprehensive Policy on Traumatic Brain Injury-Related Neurocognitive, September 11, 2015, Incorporating Change 1, Effective March 31, 2017 [open pdf - 192KB]
"In accordance with the authority in DoD Directive (DoDD) 5124.02 (Reference (a)), reissues DoD Instruction (DoDI) 6490.13 (Reference (b)) to establish policy, assign responsibilities, and prescribe standard elements, pursuant to section 722 of Public Law 111-383 (Reference (c)), requiring the implementation of a comprehensive neurocognitive assessment policy in the Military Services. [It also designates] the Army as the Military Health System (MHS) Lead Service for the testing required by the DoD Neurocognitive Assessment Program for the Military Services."
Department of Defense Instruction 6490.13; DoDI 6490.13
Defense Technical Information Center (DTIC): http://www.dtic.mil/