Coders play an important role in
a. health record documentation.
b. denying medical claims.
c. managing release of patient information.
d. reimbursement and research.

(A)  Health record documentation

Explanation:

Coder plays an important role in the heath record documentation as the main responsibility of the coder is that it analyzes the report of the patient properly. The coder deals with all the insurance companies and the heath care provider.

 They manage and also record all the medical history and treatment of the patient so that it is is known as medical coder. The medical coder mange and checks all the insurance and the medical service bills by using the given insurance codes.

Therefore, Option (A) is correct.