I'll be glad to help. Italics is no longer used to determine if a word is considered foreign and neither is the dictionary. It generally depends on the context, especially when such a word occurs in otherwise English text. It would help if you would please send a scan of a print page where this occurs so that I can see the context.
Chapter 13 of which code? What source are you referring to? Formats? Interim Manual? Something else?
--Joanna