For claims with a filing date on or after March 27, 2017, follow the guidance in this
section. For claims with a filing date before March 27, 2017, follow the guidance
in DI 24503.035 Evaluation and Articulation Requirements for Medical Opinions, Opinions, and Prior
Administrative Medical Findings - Claims Filed before March 27, 2017. For more information
about how to determine the filing date of a claim, see DI 24503.050 Determining the Filing Date for Evaluating Evidence.