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Official Description

Hepatitis A vaccine (HepA), adult dosage, for intramuscular use

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The hepatitis A vaccine (HepA), identified by CPT® Code 90632, is designed for adult administration via intramuscular injection. Unlike immune globulins, which offer short-term, passive immunity, vaccines like HepA provide active, long-term immunity. This is achieved by introducing altered forms of the hepatitis A virus to the recipient's immune system, prompting it to produce its own antibodies. As a result, the immune system retains a memory of how to generate these antibodies upon future exposure to the virus, thereby offering protection against hepatitis A, a serious liver disease that can lead to hospitalization and, in severe cases, death. The vaccine can be derived from the blood plasma of asymptomatic carriers or synthesized through recombinant technology, where a plasmid containing the hepatitis gene is inserted into baker's yeast. The yeast is then lysed, and the components are purified for use in the vaccine. This code specifically reports the hepatitis A vaccine for intramuscular use in adults, distinguishing it from other related codes that pertain to pediatric or adolescent dosages and combinations with hepatitis B 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, which can lead to serious liver disease. The vaccine is recommended for adults who are at risk of exposure to the virus, including those traveling to areas where hepatitis A is common, individuals with chronic liver disease, and those who may be in close contact with infected persons.

  • Travelers Adults traveling to regions with high rates of hepatitis A.
  • Chronic Liver Disease Individuals with chronic liver conditions who are at increased risk of severe disease.
  • Close Contacts Persons who may be in close contact with individuals diagnosed with hepatitis A.

2. Procedure

The administration of the hepatitis A vaccine involves several key procedural steps to ensure proper delivery and effectiveness of the vaccine.

  • Step 1: Preparation Prior to administration, the vaccine should be prepared according to the manufacturer's instructions. This includes checking the expiration date, ensuring the vaccine is at the appropriate temperature, and shaking the vial gently to mix the contents.
  • Step 2: Site Selection The vaccine is administered intramuscularly, typically in the deltoid muscle of the upper arm for adults. The site should be cleaned with an antiseptic wipe to reduce the risk of infection.
  • Step 3: Injection Using a sterile syringe and needle, the vaccine is injected into the muscle at a 90-degree angle. Care should be taken to aspirate the syringe to ensure that the needle is not in a blood vessel before injecting the vaccine.
  • Step 4: Post-Injection Care After the injection, the site may be massaged gently to promote absorption of the vaccine. The patient should be monitored for a short period for any immediate adverse reactions.

3. Post-Procedure

Post-procedure care for the hepatitis A vaccine includes advising the patient about potential side effects, which may include soreness at the injection site, mild fever, or fatigue. Patients should be informed that these reactions are typically mild and resolve within a few days. It is also important to remind patients to complete the vaccination series if a multi-dose schedule is recommended, and to report any unusual or severe reactions to their healthcare provider. Documentation of the vaccination should be recorded in the patient's medical record, including the date of administration, vaccine lot number, and the site of injection.

Short Descr HEPA VACCINE ADULT IM
Medium Descr HEPA VACCINE ADULT DOSE FOR INTRAMUSCULAR USE
Long Descr Hepatitis A vaccine (HepA), adult dosage, for intramuscular use
Related Drugs HAVRIX
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
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
GA Waiver of liability statement issued as required by payer policy, individual case
JZ Zero drug amount discarded/not administered to any patient
GC This service has been performed in part by a resident under the direction of a teaching physician
GX Notice of liability issued, voluntary under payer policy
GZ Item or service expected to be denied as not reasonable and necessary
SK Member of high risk population (use only with codes for immunization)
SL State supplied vaccine
UC Medicaid level of care 12, as defined by each state
CR Catastrophe/disaster related
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
25 Significant, separately identifiable evaluation and management service by the same physician or other qualified health care professional on the same day of the procedure or other service: it may be necessary to indicate that on the day a procedure or service identified by a cpt code was performed, the patient's condition required a significant, separately identifiable e/m service above and beyond the other service provided or beyond the usual preoperative and postoperative care associated with the procedure that was performed. a significant, separately identifiable e/m service is defined or substantiated by documentation that satisfies the relevant criteria for the respective e/m service to be reported (see evaluation and management services guidelines for instructions on determining level of e/m service). the e/m service may be prompted by the symptom or condition for which the procedure and/or service was provided. as such, different diagnoses are not required for reporting of the e/m services on the same date. this circumstance may be reported by adding modifier 25 to the appropriate level of e/m service. note: this modifier is not used to report an e/m service that resulted in a decision to perform surgery. see modifier 57 for significant, separately identifiable non-e/m services, see modifier 59.
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.
95 Synchronous telemedicine service rendered via a real-time interactive audio and video 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 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 would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. modifier 95 may only be appended to the services listed in appendix p. appendix p is the list of cpt codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system.
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
GW Service not related to the hospice patient's terminal condition
KV Dmepos item subject to dmepos competitive bidding program that is furnished as part of a professional service
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q3 Live kidney donor surgery and related services
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
RT Right side (used to identify procedures performed on the right side of the body)
TB Drug or biological acquired with 340b drug pricing program discount, reported for informational purposes
U6 Medicaid level of care 6, as defined by each state
UD Medicaid level of care 13, as defined by each state
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
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
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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