1. When coding for a myocardial infarction, what is the significance of the initial 4 weeks following the event? A) It is considered acute B) It is considered old or chronic C) It is not specified D) It is considered healed Answer: A) It is considered acute. Rationale: The initial 4 weeks after a myocardial infarction are critical, as the condition is considered acute during this period, which affects the coding and treatment approach. 2. In ICD-10-CM, how are external causes of morbidity coded? A) They are not coded B) They are coded as primary diagnoses C) They are coded using Chapter 20 codes D) They are coded in the injury chapter Answer: C) They are coded using Chapter 20 codes. Rationale: External causes of morbidity have their own separate chapter in ICD-10-CM