subcode

noun

sub·​code ˈsəb-ˌkōd 

variants or sub-code

plural subcodes or sub-codes

: a code that is part of or subordinate to another code

The code would include subcodes concerning building, plumbing, electrical, fire safety, elevator and boiler codes.

—Wisconsin Legislative Reference Bureau

The values … are … two-character language codes. If you want to specify a dialect of the language you can follow the language code with a dash and a subcode name.

—Jon Duckett

Word History

First Known Use

1817, in the meaning defined above