99224 Subsequent observation care; low
99225 Subsequent observation care; moderate
99226 Subsequent observation care; high

Effective Jan, 1 2011 Medicare would not pay for CPT 90658 (Influenza) and
below are the replacement codes. * Need to verify if commercial insurances
would accept these changes.

Q2035 Afluria vacc, 3 yrs & >, im
Q2036 Flulaval vacc, 3 yrs & >, im
Q2037 Fluvirin vacc, 3 yrs & >, im
Q2038 Fluzone vacc, 3 yrs & >, im
Q2039 NOS flu vacc, 3 yrs & >, im