Maryland Code, Commercial Law § 14-1701

(b)(1) “Adverse action” means a denial or revocation of credit, a change in the terms of an existing credit arrangement, or a refusal to grant credit in substantially the amount or on substantially the terms requested.

(2) “Adverse action” does not include a refusal to extend additional credit under an existing credit arrangement where the applicant is delinquent or otherwise in default, or where such additional credit would exceed a previously established credit limit.

(1) Any lender or credit grantor regulated under Title 12 of this article; or

(2) A credit union making a loan under § 6-601(e) of the Financial Institutions Article.