CPT® Code 90648

The CPT® Code 90648 refers to the Haemophilus influenzae type b (Hib) vaccine, specifically the PRP-T conjugate formulation, which is administered via intramuscular injection. Vaccines, unlike immune globulins that offer short-term, passive immunity, are designed to provide active, long-term immunity. This is achieved by introducing altered versions of specific pathogens, such as viruses or bacteria, into the recipient's body. The immune system responds by producing its own antibodies against these invaders, thereby creating a memory that enables the body to respond more effectively upon future exposures to the same antigens. Haemophilus influenzae type b is particularly concerning for children under the age of five, as it can lead to severe health complications, including pneumonia, serious throat swelling, infections in joints and bones, and meningitis, which may result in long-term consequences such as brain damage and hearing loss. The CPT® Code 90648 specifically denotes the 4-dose schedule of the PRP-T conjugate Hib vaccine, distinguishing it from other formulations, such as the PRP-OMP conjugate vaccine reported under CPT® Code 90647, which follows a 3-dose schedule. It is important to note that these codes are utilized solely for reporting the vaccine product administered.