First, some amazing news.  I understood that it might happening, but I guess it's official: new admin codes:

The American Academy of Pediatrics (AAP) was successful in obtaining new CPT codes for immunization administration. The new codes will replace the 90465-90468 immunization administration codes starting January 1, 2011 to better reflect the work associated with administering combination vaccines.

AAP will present valuation recommendations for the new codes during the October 2009 American Medical Association/Specialty Society Relative Value Scale Update Committee (RUC) meeting. Final RUC recommendations will be forwarded to the Centers for Medicare and Medicaid Services (CMS) for consideration in the 2011 Resource-Based Relative Value Scale (RBRVS).

I believe this effort is related to the disparity between the payment for a one-antigen vaccine and a 5-antigen vaccine.  Rather, there is no disparity between those payments and perhaps there should be.

Meanwhile, the AAP has updated its Vaccine Coding Table.  I've hosted my own flavor here (complete with ICD9 info), perhaps I'll update ours.