Final answer:
In ICD-10, the V codes are replaced by Chapter 21, which provides codes for reasons for healthcare encounters unrelated to specific health issues.
So, the correct answer is A) Chapter 21.
Step-by-step explanation:
The V codes in previous versions of the International Classification of Diseases (ICD) have been replaced by Chapter 21 in ICD-10. This chapter is titled 'Factors influencing health status and contact with health services' and includes codes Z00-Z99 that represent reasons for encounters with health services that are not due to illnesses or health conditions, such as receiving preventive care or reporting vaccinations.
So, the correct answer is A) Chapter 21.