ICD-10 requires only one code (Z23) per vaccination, regardless if single or combination. Report Z23 for all vaccination diagnoses.
If you administer an injection of the influenza vaccine only, report 90471. If you administer an influenza vaccine in addition to other vaccines, report the influenza injection with 90472. Note that code 90471 or 90473 cannot be reported in conjunction with 90460.
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.
Code Z23 is used to indicate any encounter for a vaccination. The procedure codes are used to identify the type of the immunization given and how it was administered.
Administration services for these preventive vaccines are reported to Medicare using HCPCS codes as follows: G0008 administration of influenza virus vaccine.
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
The code for getting the flu vaccination is Z23, which is the same for any immunization. In October 2017, an ICD-10-PCS code (3E01340) was added to capture the administration of the influenza vaccine.
Z23 may be used as a primary diagnosis for immunizations in the OP and physician setting.
The Z23 code includes the following note: “Code first any routine childhood examination.” Therefore, when you provide immunizations in conjunction with a well-child visit, a code for routine child health examination should be reported first, followed by Z23 for any immunizations. This is similar to ICD-9 rules.
ICD-10 code Z71. 89 for Other specified counseling is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .