Z23 is the ICD-10-CM code used when reporting an encounter for immunization for all vaccines given within the encounter.
ICD-10 requires only one code (Z23) per vaccination, regardless if single or combination. Report Z23 for all vaccination diagnoses.
If the immunization is related to exposure (eg, the administration of a Tdap vaccine as a part of wound care), the ICD-10 code describing the exposure should be used as the primary diagnosis code for the vaccine, and Z23 should be used as the secondary code.
7) along with the appropriate CPT code (90746 for hepatitis B vaccine or 90632 for hepatitis A vaccine) plus the appropriate CPT administration code (90471 for immunization administration).
G0312 - Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service for ages under 21, 5-15 minutes.
Inoculations and Vaccinations ICD-10-CM Coding 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.
Z23 may be used as a primary diagnosis for immunizations in the OP and physician setting.
For immunization administration other than COVID-19, codes 90460–90474 are reported for the administration of the vaccine, along with the appropriate vaccine/toxoid code (90476–90756) targeting the organism.
Attention: Providers of Well Child Exams - Clarification of Appropriate Diagnosis CodesICD-10 Diagnosis CodeCode DescriptionZ00.121Encounter for routine child health examination with abnormal findingsZ00.129Encounter for routine child health examination without abnormal findings4 more rows•Jun 18, 2021
Limitations90476©Adenovirus vaccine, type 490698©90585©Bcg vaccine, precut90702©90586©Bcg vaccine, intravesical90704©90632©Hep a vaccine, adult im90705©90633©Hep a vacc, ped/adol, 2 dose90706©29 more rows
CPT CodeCPT CodeCPT DescriptionCPT Code Status90646Haemophilus influenza b vaccine (Hib), PRP-D conjugate, for booster use only, intramuscular useActive90647Haemophilus influenza b vaccine (Hib), PRP-OMP conjugate (3 dose schedule), for intramuscular useActive76 more rows
Billing Guidelines: Hepatitis B vaccine (recombinant), adjuvanted solution for intramuscular injection (Heplisav-B) HCPCS code 90739.
G0010 is a valid 2022 HCPCS code for Administration of hepatitis b vaccine or just “Admin hepatitis b vaccine” for short, used in Medical care.
Immunization administration for90471: Immunization administration for percutaneous, intra-dermal, subcutaneous or intramuscular injections, initial.
90472 Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); each additional vaccine (single or combination vaccine/toxoid) (list separately in addition to code for primary procedure)
90686=Inactivated Influenza Vaccine, quadrivalent (IIV4), split virus, preservative free, 0.5-mL dosage, for intramuscular use.