How many of these big 2021 changes do you recall? Can you remember the important coding changes that have occurred over the previous 12 months? If your memory is a bit fuzzy, here are questions about three of the most significant. Answer them all correctly, and you can see the year out in style. Question 1: The 2021 Physician Fee Schedule (PFS) outlined the ways you must report prolonged services to Medicare or payers that follow Medicare guidelines beginning on Jan. 1, 2021. This differs from the way you report them to payers who follow CPT®. What are those differences, what codes do you use to report them, and how would you report a 90-minute evaluation and management (E/M) visit using either system? Question 2: On Oct. 1, 2021, ICD-10 expanded the Z55-Z65 (Persons with potential health hazards related to socioeconomic and psychosocial circumstances) code group. What were the revisions to Z59.4-? Question 3: On Jan. 1, 2022, CPT® will introduce new principal care management (PCM) codes 99424 (Principal care management services, … first 30 minutes …), +99425 (… additional 30 minutes …), 99426 (Principal care management services … first 30 minutes …), and +99427 (… each additional 30 minutes …). Which patients are eligible for these codes, who can provide these services, and what activities will count in calculating time for them? Think you know the answers? Click here to know the Answers.