Wiki -AT modifier (and osteopathic manipulations)

[Coding&Thriving]

Hi there,

Is the -AT modifier strictly reserved for the chiropractic manipulation range?
Or can it be extended to osteopathic manipulations (98925-98929) as well? From what I gather, mainly via the HCPCS modifier definition, the modifier is used pretty exclusively for CMT.

I'm viewing this outside the scope of Medicare.

Thank you!