Das gelbe Heft. A German child receives ten medical examinations in the first six years, U1 through U9 including U7a, at fixed intervals from the minutes after birth to just before school.
They are a statutory insurance benefit under § 26 SGB V, and the content and timing are set nationally by the Gemeinsame Bundesausschuss. Each is recorded in the yellow booklet the parents receive at birth, which carries the schedule for every appointment that follows.
In Bavaria, Hesse and Baden-Württemberg, attendance is legally required.