CPT code 90698 describes a single intramuscular combination vaccine product that provides active immunization against diphtheria, tetanus, pertussis, Haemophilus influenzae type b (Hib), and poliovirus; this represents a preventive vaccine service typically administered as an intramuscular injection in outpatient clinics, pediatrician offices, and other ambulatory care settings.

For related coverage guidance, see recent payer policy updates: B-Hemolytic Streptococcus Testing, Human Immunodeficiency Virus (HIV) — Coverage Criteria for Testing and Resistance Assays, Hepatitis Testing (A, B, C, D) Coverage Criteria.