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Official Description

Hepatitis A vaccine (HepA), pediatric/adolescent dosage-3 dose schedule, for intramuscular use

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 90634 refers to the Hepatitis A vaccine (HepA) specifically formulated for pediatric and adolescent patients, administered in a three-dose schedule via intramuscular injection. Vaccines, such as the HepA vaccine, are designed to provide active, long-term immunity by stimulating the recipient's immune system to recognize and combat specific pathogens. Unlike immune globulins, which offer temporary, passive immunity, vaccines encourage the body to produce its own antibodies, thereby equipping the immune system to respond effectively upon future exposure to the virus. The Hepatitis A vaccine is crucial in preventing hepatitis A, a serious liver infection that can lead to severe health complications, including hospitalization and, in extreme cases, death. The vaccine can be derived from the blood plasma of asymptomatic carriers or produced through recombinant technology, which involves inserting the hepatitis gene into yeast cells, purifying the resulting product, and ensuring its safety and efficacy. This code is specifically used to report the administration of the HepA vaccine for pediatric and adolescent patients, distinguishing it from other related codes that pertain to different dosages or combinations of vaccines.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The Hepatitis A vaccine (HepA) is indicated for the prevention of hepatitis A virus infection, particularly in pediatric and adolescent populations. The following conditions and circumstances warrant the administration of this vaccine:

  • Prevention of Hepatitis A: The primary indication for the HepA vaccine is to provide immunity against hepatitis A, a viral infection that can cause liver inflammation and serious health complications.
  • Travel to Endemic Areas: Individuals, especially children and adolescents, who are traveling to regions where hepatitis A is prevalent are advised to receive the vaccine to reduce the risk of infection.
  • Close Contact with Infected Individuals: Vaccination is recommended for those who may have close contact with individuals diagnosed with hepatitis A, as this can help prevent the spread of the virus.
  • High-Risk Populations: Children and adolescents in high-risk groups, such as those living in areas with poor sanitation or those who are part of communities with higher rates of hepatitis A, should receive the vaccine.

2. Procedure

The administration of the Hepatitis A vaccine (CPT® Code 90634) follows a structured procedure to ensure safety and efficacy. The steps involved in the vaccination process are as follows:

  • Step 1: Patient Assessment Before administering the vaccine, healthcare providers should assess the patient's medical history, including any previous allergic reactions to vaccines, current health status, and any contraindications to vaccination.
  • Step 2: Preparation of the Vaccine The vaccine should be prepared according to the manufacturer's instructions. This includes checking the expiration date, ensuring proper storage conditions, and gently mixing the vaccine if necessary to ensure uniformity.
  • Step 3: Site Selection and Preparation The intramuscular injection site is typically the deltoid muscle in the upper arm for older children and adolescents. The area should be cleaned with an antiseptic wipe to minimize the risk of infection.
  • Step 4: Administration of the Vaccine Using a sterile syringe and needle, the vaccine is injected intramuscularly into the selected site. The injection should be administered swiftly and smoothly to minimize discomfort.
  • Step 5: Post-Administration Care After the vaccine is administered, the patient should be monitored for a short period to observe for any immediate adverse reactions. The healthcare provider should provide the patient or guardian with information regarding potential side effects and the importance of completing the full vaccination schedule.

3. Post-Procedure

Post-procedure care for the Hepatitis A vaccine involves monitoring the patient for any immediate adverse reactions, which may include mild soreness at the injection site, low-grade fever, or fatigue. Patients should be advised to rest and hydrate adequately following vaccination. It is essential to inform the patient or guardian about the importance of completing the three-dose schedule to ensure optimal immunity. Follow-up appointments should be scheduled to administer the subsequent doses as per the recommended timeline, typically at 1 and 6 months after the initial dose. Additionally, patients should be educated on recognizing any unusual symptoms that may arise post-vaccination and encouraged to seek medical attention if necessary.

Short Descr HEPA VACC PED/ADOL 3 DOSE
Medium Descr HEPA VACCINE 3 DOSE SCHEDULE PED/ADOLESC IM USE
Long Descr Hepatitis A vaccine (HepA), pediatric/adolescent dosage-3 dose schedule, for intramuscular use
Status Code Excluded from Physician Fee Schedule by Regulation
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 9 - Not Applicable
Multiple Procedures (51) 9 - Concept does not apply.
Bilateral Surgery (50) 9 - Concept does not apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 9 - Concept does not apply.
Co-Surgeons (62) 9 - Concept does not apply.
Team Surgery (66) 9 - Concept does not apply.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Non-Covered Service, not paid under OPPS
ASC Payment Indicator
Type of Service (TOS) 1 - Medical Care
Berenson-Eggers TOS (BETOS) P6C - Minor procedures - other (Medicare fee schedule)
MUE 1
CCS Clinical Classification 228 - Prophylactic vaccinations and inoculations
93 Synchronous telemedicine service rendered via telephone or other real-time interactive audio-only telecommunications system : synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located away at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that is sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction.
AJ Clinical social worker
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
U8 Medicaid level of care 8, as defined by each state
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Action
Notes
2016-01-01 Changed First appearance of change in codebook.
2015-07-01 Changed Description changed.
2011-01-01 Changed Short description changed.
1999-01-01 Added First appearance in code book in 1999.
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