Recommendations for Use of HPV VaccineRecommendations for Routine Use and Catch-Up
Routine Vaccination of Females Aged 11--12 Years
ACIP recommends routine vaccination of females aged 11--12 years with 3 doses of quadrivalent HPV vaccine. The vaccination series can be started as young as age 9 years.
Catch-Up Vaccination of Females Aged 13--26 Years
Vaccination also is recommended for females aged 13--26 years who have not been previously vaccinated or who have not completed the full series. Ideally, vaccine should be administered before potential exposure to HPV through sexual contact; however, females who might have already been exposed to HPV should be vaccinated. Sexually active females who have not been infected with any of the HPV vaccine types would receive full benefit from vaccination. Vaccination would provide less benefit to females if they have already been infected with one or more of the four vaccine HPV types. However, it is not possible for a clinician to assess the extent to which sexually active persons would benefit from vaccination, and the risk for HPV infection might continue as long as persons are sexually active. Pap testing and screening for HPV DNA or HPV antibody are not needed before vaccination at any age.
There is some connection between "routine" and "mandatory," even though they aren't exactly the same thing.
I'm not familiar with the terms of art used by ACIP, so don't know if there are some vaccines where the recommendation is "mandatory vaccination." I think I'll research that.
States are encouraged to adopt regulations or laws that require hepatitis B vaccination for entry into child care and also for entry into kindergarten and/or elementary school to ensure high vaccine coverage among infants and children. ...States are encouraged to adopt regulations or laws that require hepatitis B vaccination before entry into middle school or its equivalent.
This sort of "encouraged to ... require" language is absent from the ACIP cut-sheet on HPV vaccination.
So, it appears ACIP does not encourage states to require HPV vaccination, but it does recommend HPV be part of the routine childhood vaccination schedule.