ICD-10 requires only one code (Z23) per vaccination, regardless if single or combination. Report Z23 for all vaccination diagnoses.
90686, “Influenza virus vaccine, quadrivalent (IIV4), split virus, preservative free, 0.5 mL dosage, for intramuscular use.” 90688, “Influenza virus vaccine, quadrivalent (IIV4), split virus, 0.5 mL dosage, for intramuscular use.”
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.
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.
Payment Allowances and Effective Dates for the 2020-2021 Flu Season:CodeLabeler NameVaccine Name90688Sanofi Pasteur SeqirusFluzone Quadrivalent (2020/2021) Afluria Quadrivalent (2020/2021)90756SeqirusFlucelvax Quadrivalent (2020/2021)9 more rows•Dec 22, 2021
CPT code 90470, H1N1 immunization administration (intramuscular, intranasal), including counseling when performed.
X2 – Influenza Due to Identified Novel Influenza A Virus with Other Respiratory Manifestations.
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.
Z23 may be used as a primary diagnosis for immunizations in the OP and physician setting.
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 .