1. Part B Physician/Supplier National Data - CY2017 Top 200 Level 1 Current Terminology (HCPCS/CPT) Codes. Available at: https://www.cms.gov/Research-Statistics-Data-and-Systems/Statistics-Trends-and-Reports/MedicareFeeforSvcPartsAB/Downloads/LEVEL1CHARG17.pdf?agree=yes&next=Accept. Accessed September 27, 2018.
2. 1995 Documentation Guidelines For Evaluation And Management Services. Available at: https://www.cms.gov/Outreach-and-Education/Medicare-Learning-Network-MLN/MLNEdWebGuide/Downloads/95Docguidelines.pdf. Accessed October 30, 2018.
3. 1997 DOCUMENTATION GUIDELINES FOR EVALUATION AND MANAGEMENT SERVICES. Available at: https://www.cms.gov/Outreach-and-Education/Medicare-Learning-Network-MLN/MLNEdWebGuide/Downloads/97Docguidelines.pdf. Accessed October 30, 2018.
4. New guidelines for coding physicians' services–a step backward;Brett;N Engl J Med,1998
5. Medicare Program: Revisions to Payment policies under the physician fee schedule and other revisions to part B for CY 2019; Medicare Shared Savings Program Requirements; Quality Payment Program; Medicaid Promoting Interoperability Program; etc. Available at: https://www.federalregister.gov/documents/2018/11/23/2018-24170/medicare-program-revisions-to-payment-policies-under-the-physician-fee-schedule-and-other-revisions. Accessed November 16, 2018.