As far as I know, we have the IntelliSense filtering from VS 2017 RC version, not the VS 2015, please check this: Productivity in Visual Studio 2017 RC
I have checked the VS Code IntelliSense and its settings, there is no such feature for it. After research, I found some other community members already reported this user voice to the VS Code Product Team, please have a look at this: Add action(and ultimately a shortcut) to narrow auto suggestions by suggestion type #18639
Now the VS Code Product Team have not added any update yet, you can try to add a comment to know the current progress of this requested feature, thank you for your understanding.
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