Only if the code or standard meets five tests: it applies to the type of repair, fits the facility’s pre-disaster use, is reasonable and formally adopted on or before the declaration date (or is a federal legal requirement), applies uniformly, and was enforced.
The code text and adoption record, evidence it is applied uniformly, and enforcement history, such as permits for similar non-disaster work.
Collect proof of past enforcement now. A code you didn’t apply to non-disaster projects won’t fund upgrades after one.