What is POSS AMNT CONT SUBS EXCEPT A and D?

POSS AMNT CONT SUBS EXCEPT A and D typically refers to a category in data or analysis that tracks the possible amount of controlled substances, excluding specific classifications (A and D). This could pertain to regulations or guidelines in fields such as healthcare, law enforcement, or pharmaceuticals, where monitoring the use of certain substances is critical. The exclusion of categories A and D suggests that the focus is on other substances that may carry different legal or health implications.