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Official Description

Hepatitis A vaccine (HepA), pediatric/adolescent dosage-2 dose schedule, for intramuscular use

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 90633 refers to the Hepatitis A vaccine (HepA) specifically formulated for pediatric and adolescent patients, administered in a two-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 it to respond effectively to future exposures 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 to create a safe and effective immunization product. This code is specifically designated for the pediatric/adolescent dosage, distinguishing it from other related codes that cater to different age groups or dosage schedules, such as the adult dosage or those requiring a three-dose schedule. The use of this code is limited to reporting the vaccine product itself, ensuring accurate documentation and billing for immunization services.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The Hepatitis A vaccine (HepA) is indicated for the prevention of hepatitis A virus infection in pediatric and adolescent populations. The vaccine is particularly recommended for individuals who may be at increased risk of exposure to the virus, including those living in or traveling to areas with high rates of hepatitis A, as well as children and adolescents who may be in close contact with infected individuals. Additionally, vaccination is advised for those who may have underlying health conditions that could lead to more severe outcomes if they contract hepatitis A.

  • Risk of Exposure Individuals living in or traveling to regions with high hepatitis A prevalence.
  • Close Contact Children and adolescents in close contact with infected persons.
  • Underlying Health Conditions Patients with health issues that may exacerbate the effects of hepatitis A.

2. Procedure

The administration of the Hepatitis A vaccine (HepA) follows a structured procedure to ensure safety and efficacy. The first step involves verifying the patient's eligibility for vaccination, including reviewing their medical history and any potential contraindications. Once eligibility is confirmed, the healthcare provider prepares the vaccine, ensuring that it is stored and handled according to manufacturer guidelines. The vaccine is then administered intramuscularly, typically in the deltoid muscle of the upper arm for older children and adolescents. The first dose is given, followed by a second dose, which is scheduled according to the recommended two-dose schedule, usually six to twelve months after the initial dose. Proper documentation of the vaccination, including the date of administration, lot number, and site of injection, is essential for maintaining accurate medical records and ensuring compliance with immunization tracking requirements.

  • Step 1: Verify Eligibility Review the patient's medical history and check for any contraindications to vaccination.
  • Step 2: Prepare the Vaccine Ensure the vaccine is stored and handled according to the manufacturer's guidelines before administration.
  • Step 3: Administer the Vaccine Inject the vaccine intramuscularly, typically in the deltoid muscle, following the two-dose schedule.
  • Step 4: Document the Administration Record the date, lot number, and site of injection in the patient's medical records.

3. Post-Procedure

After the administration of the Hepatitis A vaccine, patients are typically monitored for a short period to observe for any immediate adverse reactions. Common post-vaccination care includes advising the patient or guardian about potential mild side effects, such as soreness at the injection site, low-grade fever, or fatigue, which usually resolve on their own. It is important to inform the patient or guardian about the need for the second dose, which should be scheduled according to the recommended timeframe to ensure optimal immunity. Additionally, healthcare providers should encourage patients to report any unusual or severe reactions following vaccination, ensuring that appropriate follow-up care is provided if necessary.

Short Descr HEPA VACC PED/ADOL 2 DOSE IM
Medium Descr HEPA VACCINE 2 DOSE SCHEDULE PED/ADOLESC IM USE
Long Descr Hepatitis A vaccine (HepA), pediatric/adolescent dosage-2 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 Items and Services Packaged into APC Rates
ASC Payment Indicator Packaged service/item; no separate payment made.
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
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
GA Waiver of liability statement issued as required by payer policy, individual case
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
GZ Item or service expected to be denied as not reasonable and necessary
SL State supplied vaccine
X1 Continuous/broad services: for reporting services by clinicians, who provide the principal care for a patient, with no planned endpoint of the relationship; services in this category represent comprehensive care, dealing with the entire scope of patient problems, either directly or in a care coordination role; reporting clinician service examples include, but are not limited to: primary care, and clinicians providing comprehensive care to patients in addition to specialty care
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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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