During the course of this term you have been learning about the 2021 ICD-10-CM Official Guidelines for Coding and Reporting. You know from your textbook Understanding ICD-10-CM/PCS Chapter 5 that the guidelines are divided into four sections and one appendix. For the purposes of this discussion your focus is on Section II: Selection of Principal Dx (inpatient Dx) and Section IV. Diagnostic Coding and Reporting Guidelines for Outpatient Services (First-listed Dx). 

For this discussion, compare and contrast the Section II & Section IV.

• Identify and briefly explain two guidelines that are similar in both settings
• Identify and briefly explain two guidelines that provide opposing instruction for code application in the two unique settings.