In simple words: This code is for a flu shot. It's a specific type of flu vaccine that protects against four types of the flu virus. The shot is given as an injection into a muscle.

This CPT code, 90689, represents the administration of an inactivated, adjuvanted, preservative-free, quadrivalent influenza virus vaccine (IIV4).The vaccine is delivered intramuscularly at a dosage of 0.25 mL.The code specifically identifies the vaccine product, and should be reported in conjunction with an immunization administration code (e.g., 90460, 90461, 90471, 90472, 90473, 90474) for non-SARS-CoV-2 vaccines and 90480 for SARS-CoV-2 vaccines,unless both are administered in the same encounter.Modifier 51 should not be used with this code when reported with administration codes.

Example 1: A 65-year-old patient receives a quadrivalent influenza vaccine (IIV4) as part of their annual wellness visit. Code 90689 is reported with the appropriate administration code., A pediatrician administers the IIV4 vaccine to a 2-year-old child.Code 90689 is used along with the correct administration code. Appropriate documentation of the vaccine administered and patient's age is necessary., A patient receives both the IIV4 vaccine and another vaccine during the same encounter.Both vaccine codes, including 90689, are reported with the corresponding administration code(s).

Documentation should include the type of vaccine (quadrivalent influenza, inactivated, adjuvanted, preservative free), the dosage (0.25 mL), the route of administration (intramuscular), the date of administration, and the patient's relevant medical history and any allergies.

** The vaccine abbreviations used in CPT codes reflect the most recent US vaccine abbreviation references used in ACIP recommendations at the time of CPT code set publication.Interim updates to vaccine code descriptors are made via the AMA CPT website.