The information revolution has effected tumultuous change in the profe
ss by which physicians receive compensation for their services. In an
effort to predict and control costs, a labyrinthine coding system, tog
ether with multilayered rules and regulations, has been developed to p
inpoint medical function. Computerization of the insurance industry al
lows vigilant scrutiny of the physicians claims. Since noncompliance w
ith payment rules now carries legal or monetary consequences, physicia
ns need to pay careful attention to payer methodology, not only to ful
fill the requirements of the law but also to receive accurate and opti
mal reimbursement. This article is designed to help practitioners unsc
ramble these exacting mandates and stay in alignment.