What does IA stand for in a court case number?

Answer 1

There is no centralized system for case numbering. While many jurisdictions use some common abbreviations (CV for civil), IA is not a commonly used type. It could refer to the type of case, it could refer to the division or judge that the case is assigned to, or it could mean something else. You'd have to ask someone in the specific court to be sure.

Answer 2

It means Initial Appearance