38 cfr part a July 8, 2019 16 32 64 128 38 cfr part 4 asthma 38 cfr part 3 and 4 38 cfr part 4 anxiety 38 cfr part 4 ankle 38 cfr part 4 sleep apnea 38 cfr part 70 subpart a 38 cfr part 4 4.71 a Part 38 38 c.f.r. part 3 38 c.f.r. part 4 38 cfr part 39