91320 CPT SARS–CoV–2 Vaccine Reimbursement | OpenPayer

Summary & Overview

CPT 91320: SARS–CoV–2 Vaccine (30 mcg/0.3 mL) Intramuscular

CPT code 91320 identifies a SARS–CoV–2 vaccine product (tris–sucrose formulation) supplied as a 30 mcg/0.3 mL dose for intramuscular injection to reduce the risk of COVID–19. Nationally, COVID–19 vaccination codes remain central to public health immunization efforts, coverage policies, and payer reimbursement frameworks. This code informs billing for vaccine acquisition distinct from administration fees and is used across outpatient and community vaccination settings.

Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what 91320 represents clinically and operationally, typical places where the vaccine is administered, and which major payers commonly cover such vaccine products. The publication also summarizes common modifiers and the practical contexts in which the code is billed. Where specific data elements were not provided, the report notes the absence of that input.

This summary is intended for billing managers, revenue-cycle professionals, and policy analysts who need a clear, national-level description of CPT code 91320, its clinical purpose, and the payer landscape relevant to COVID–19 vaccine product billing.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare91320CPTCOVID-19 vaccineSARS-CoV-2vaccine administrationintramuscularimmunizationoutpatient services

Billing Code Overview

CPT code 91320 represents a SARS–CoV–2 vaccine product (tris–sucrose formulation) administered by intramuscular injection. The formulation is supplied at a dosage of 30 mcg/0.3 mL and is intended to reduce the patient’s risk of contracting COVID–19.

Service type: Vaccine administration (intramuscular)

Typical site of service: Outpatient clinic, physician office, pharmacy immunization area, public health clinic, or other outpatient vaccination settings.

Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related service-line details.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult or adolescent presenting to an outpatient clinic, occupational health site, pharmacy-based immunization center, or primary care office for routine immunization against COVID-19. The patient is triaged, screened for contraindications and recent illnesses or vaccines, informed consent is obtained, and immunization history is documented. The vaccine product 91320 (SARS–CoV–2 vaccine, tris–sucrose formulation, 30 mcg/0.3 mL) is prepared and administered intramuscularly, commonly in the deltoid. Post-vaccination observation (typically 15 minutes; 30 minutes if prior anaphylaxis) is completed, adverse events are documented, and vaccine lot number and manufacturer are recorded in the medical record and immunization registry. Billing is submitted for the vaccine product using 91320, with an appropriate administration code billed separately per payer requirements.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier / default	Used when no special modifier applies and the claim is unmodified per payer rules.
`25`

CPT 91200: Liver Elastography for Lesion Characterization

CPT-91299-UNLISTED-GASTROINTESTINAL-DIAGNOSTIC-PROCEDURE

CPT 91299: Unlisted Gastrointestinal Diagnostic Procedure

CPT-91321-SARS-COV-2-VACCINE-25MCG-IM-INJECTION

CPT 91321: SARS–CoV–2 Vaccine, 25 mcg Intramuscular Injection

CPT-91322-SARS-COV-2-VACCINE-50MCG-INTRAMUSCULAR

CPT 91322: SARS–CoV–2 Vaccine, 50 mcg/0.5 mL Intramuscular

CPT-91319-SARS-COV-2-VACCINE-TRIS-SUCROSE-10MCG-0-3ML-IM

CPT 91319: SARS–CoV–2 Vaccine (tris–sucrose), 10 mcg/0.3 mL IM

CPT-91318-SARS-COV-2-VACCINE-TRIS-SUCROSE-3MCG

CPT 91318: SARS–CoV–2 Vaccine (tris–sucrose), 3 mcg/0.3 mL

CPT-91323-MRNA-COVID19-VACCINE-10MCG-0-2ML-IM-IMMUNIZATION

CPT 91323: mRNA COVID-19 Vaccine, 10 mcg/0.2 mL Intramuscular

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Primary vaccinators in outpatient and community settings.
`207R00000X`	Internal Medicine	Adult primary care clinicians administering routine immunizations.
`363LP0800X`	Nurse Practitioner	Commonly provides vaccine administration in clinics and retail settings.
`3336S0105X`	Pharmacist	Pharmacists administer vaccines in pharmacy-based immunization programs (where authorized).
`207K00000X`	Pediatric Medicine	Administers COVID-19 vaccine to adolescents and children according to age indications.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z23`	Encounter for immunization	Primary diagnosis code used when administering `91320` to indicate routine vaccination.
`U07.1`	COVID-19, virus identified	Relevant when the patient has current COVID-19; vaccination may be deferred until recovery per clinical guidance.
`Z71.89`	Other specified counseling	Used when specific vaccine counseling or education is provided during the visit.
`Z00.00`	Encounter for general adult medical examination without abnormal findings	Used when vaccination occurs during a routine well visit.
`Z00.129`	Encounter for routine child health examination without abnormal findings	Used for adolescent patients receiving routine immunization and preventive care.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`90471`	Immunization administration (single) intramuscular or subcutaneous; first vaccine or toxoid component	Used to bill the administration service when a single vaccine (such as `91320`) is given.
`90472`	Immunization administration, each additional vaccine component, intramuscular or subcutaneous	Used if additional vaccine components are administered during the same encounter.
`96372`	Therapeutic, prophylactic, or diagnostic injection (subcutaneous or intramuscular)	Sometimes used by non-traditional sites when payer guidelines direct its use for vaccine administration.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, low to moderate complexity	Common E/M code billed when a separate, documented office visit occurs the same day as vaccination; use with modifier `25` if billed with administration.
`90460`	Immunization administration through 18 years via any route, with counseling by physician or other qualified health care professional; first vaccine	Used for pediatric patients when counseling is documented as part of vaccine administration.
`90461`	Each additional vaccine administration through 18 years, with counseling	Used for additional vaccines in pediatric encounters with counseling.

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