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Using the CPT codes 99211 and 99201 appropriately will help to ensure that all Level l services are captured and billed. However, the codes, which deal with office or outpatient visits for established and new patients, have distinctively different parameters and must be documented and billed according to the guidelines of each code. As a result, many coders struggle with when and how to report them. Also of particular confusion to many coders is the billing of timed codes and the use of certain modifiers. The information below should help to capture all services rendered and billed not only for codes 99211 and 99201, but also for timed codes, and modifiers -76 and -77 while staying within compliance guidelines.