A 5-year-old established patient presents today to get required vaccinations to start school.

Parent has no concerns.

Treatment: Child given the following vaccinations:

• Diphtheria, tetanus, & acellular pertussis3 (DTaP: <7 yrs)
• Inactivated poliovirus6 (IPV) (<18 yrs)
• Measles, mumps, rubella8 (MMR)
• Varicella9 (VAR)

1. Describe the steps you would take to ensure the best code or codes are assigned for this service. 
2. What code or codes would you assign? Explain your choice.
3. Explain how the guideline(s) affected your code choices.