Final answer:
The statement in the question is false; adjustment procedure codes can affect both the insurance and patient portions of a balance in medical billing.
Step-by-step explanation:
True or False: Adjustment procedure codes can only be configured to impact the insurance portion of a balance. The statement is False. Adjustment procedure codes in medical billing can be configured to impact not only the insurance portion but also the patient portion of a balance. These codes are used to make modifications to the financial records of patient accounts and can reflect various types of adjustments, such as contractual adjustments, corrections, discounts, or write-offs that could affect the total balance due from either the insurance or the patient directly.