At a very high level, what I would offer you is that the provisions of the code are designed so that they're sort of condition-agnostic, so to speak; they don't focus on particular medical disorders or one disease or the other.
As part of the safeguard regimes, for example, Bill C-7 added that a person be offered consultations and has given serious consideration to other means of alleviating suffering. That type of language in a safeguard can evolve as treatment options evolve and as our understanding of illnesses evolve. What might be a treatment option in 2022.... Maybe we will have more treatment options in 2042, for instance.
The safeguards that are drafted in the current code may be able to evolve with the times, but if you're thinking about safeguards more generally for anything, it's important to bear in mind that you may not want something that only addresses one particular type of condition, because then it may be difficult to apply across a broader range of circumstances.