ICD-10 requires only one code (Z23) per vaccination, regardless if single or combination. Report Z23 for all vaccination diagnoses.
Use the CPT code for the vaccine administered (90686) and link to the diagnosis code for the immunization. Because qualified counseling occurred for a patient younger than 18 years of age, bill 1 unit of 90460 for administering influenza vaccine. Link to the immunization diagnosis code.
According to ICD-10-CM guidelines, clinicians may assign code Z28. 310, “Unvaccinated for COVID-19,” when the patient has not received a dose of any COVID-19 vaccine. Clinicians may assign code Z28.
Do not report 90473 in conjunction with 90471. *90472 will only be used if another vaccine is given in addition to the flu vaccine....Vaccine CPT Code to ReportCPT Code Description90688Influenza virus vaccine, quadrivalent (IIV4), split virus, 0.5 mL dosage, for intramuscular use5 more rows•Aug 31, 2021
90688=Inactivated Influenza Vaccine, quadrivalent (IIV4), split virus, 0.5-mL dosage, for intramuscular use. Source: 2021 CPT.
Payment Allowances and Effective Dates for the 2021-2022 Flu Season:CodeLabeler NameVaccine Name90662Sanofi PasteurFluzone High-Dose Quadrivalent (2021/2022)90672MedImmuneFluMist Quadrivalent (2021/2022)90674SeqirusFlucelvax Quadrivalent (2021/2022) (Pres Free)90682Sanofi PasteurFlublok Quadrivalent (2021/2022)6 more rows•Dec 22, 2021
ICD-10-CM Description Clinicians may assign code Z28. 311, “Partially vaccinated for COVID-19,” when the patient has received at least one dose of a multi-dose COVID-19 vaccine regimen, but has not received the doses necessary to meet the CDC definition of “fully vaccinated” at the time of the encounter.
Influenza due to identified novel influenza A virus ICD-10-CM J09. X2 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
Code Z23, which is used to identify encounters for inoculations and vaccinations, indicates that a patient is being seen to receive a prophylactic inoculation against a disease. If the immunization is given during a routine preventive health care examination, Code Z23 would be a secondary code.