ICD-10 code Z23 is reported for vaccine-related encounters for all vaccines given within the encounter. Z23 is the ICD-10 code that identifies an encounter for immunization(s).
For vaccines administered without counseling, you would use 90471 for an injection, with units of 90472 for other shots given during that visit. For intranasal or other vaccines administered without an injection, use 90473.
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.
ICD-10 code Z23 for Encounter for immunization is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .
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.
Billing Guidelines: Zoster Vaccine Recombinant, Adjuvanted, Suspension for Intramuscular Injection (Shingrix) CPT code 90750.
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.
90460-90461 are reported for administration to patients 18 years of age and under. Code 90460 is reported for each separate administration of single component vaccines and/or first component of a combination vaccine.
Tetanus and Diphtheria Vaccinations Billing GuidelinesCPT CodeICD-1090715S61011A90471S61011AAug 30, 2018
The ICD-10 code to use for flu vaccination is Z23, encounter for immunization. There are many CPT codes to describe influenza vaccine, varying by manufacturer, product and age group.
The new ICD-10-CM diagnosis code for COVID-19 is U07. 1, effective April 1, 2020.
9: Contact with and exposure to unspecified communicable disease.