COVID-19 vaccine and monoclonal antibody billing for Part A providers
This article will assist Medicare Part A providers with proper billing relating to COVID-19 vaccine and monoclonal antibody (mAb) infusion. Beneficiary coinsurance and deductible are waived.
How to bill for COVID-19 vaccines and monoclonal antibodies
For billing single claims for COVID-19 vaccines and monoclonal antibodies, follow the instructions in the article below:
- For roster billing and centralized billing, reference the Medicare billing for COVID-19 vaccine shot administration page.
- On or after January 1, 2022, claims for vaccine or mAb administrations for Medicare Advantage enrollees should be submitted to the Medicare Advantage plan. For services provided to Medicare Advantage enrollees on or after January 1, 2022, contact the Medicare Advantage for guidance on coverage and billing.
The types of bill (TOBs) to report for the COVID-19 vaccine and mAb infusion on the Part A claim form, or electronic equivalent, are:
- Inpatient Part B
- Hospital -- 12X
- SNF -- 22X
- Hospital -- 12X
- Outpatient
- Hospital -- 13X
- SNF -- 23X
- End stage renal disease -- 72X
- Comprehensive outpatient rehabilitation facility -- 75X
- Critical access hospital -- 85X
- Hospital -- 13X
- Revenue codes:
- 0771 -- Preventive care services, vaccine administration
- 0636 -- Pharmacy, drugs requiring detailed coding
- 0771 -- Preventive care services, vaccine administration
Vaccine billing examples
Billing example for first dose:

Condition code:
- A6 – 100% payment
Diagnosis code:
- Z23 – Encounter for immunization
- Required as primary diagnosis
- Required as primary diagnosis
Billing example for second dose:

Condition Code:
- A6 - 100% payment

Diagnosis code:
- Z23 - Encounter for immunization

Note: For vaccines provided for inpatients, use the date of discharge or date Part A benefits exhausted as the date of service.
Monoclonal antibodies and their administrations currently authorized
For payment allowances and coding refer to the CMS vaccine pricing - COVID-19 vaccines and monoclonal antibodies and the CMS COVID-19 monoclonal antibodies webpages.
Billing example for infusion:

Diagnosis codes:
- Use appropriate diagnosis coded to highest level of specificity
- U071 use as appropriate

Note: For vaccines provided for inpatients, use the date of discharge or date Part A benefits exhausted as the date of service.
Rural health clinics and federally qualified health centers
Independent and provider-based rural health clinics (RHCs) and federally qualified health centers (FQHCs) do not include charges for the COVID-19 vaccine and monoclonal antibodies on a claim form.
Administration of these vaccines does not count as a visit when the only service involved is the administration of the COVID-19 vaccine and/or monoclonal antibodies.
If there was another reason for the visit, the RHC/FQHC should bill for the visit without adding the cost of the COVID-19 vaccine and/or monoclonal antibodies to the charge for the visit on the bill.
Payment is made at the time of cost settlement.
SNFs – Enforcement discretion to certain pharmacy billing
To facilitate the efficient administration of COVID-19 vaccines and monoclonal antibody treatments to SNF residents, CMS will exercise enforcement discretion with respect to these statutory provisions as well as any associated statutory references and implementing regulations, including as interpreted in pertinent guidance, SNF CB Provisions. Through the exercise of that discretion, CMS will allow Medicare-enrolled immunizers, including but not limited to pharmacies working with the United States, to bill directly and receive direct reimbursement from the Medicare program for vaccinating Medicare SNF residents.
The enforcement discretion associated with vaccinating Medicare SNF residents ended on June 30, 2023, meaning that immunizers are no longer be able to bill Medicare directly for vaccines furnished to patients for a Medicare Part A-covered SNF stay. Beginning on July 1 ,2023, typical SNF consolidated billing regulations are in place, which require SNFs to bill for all services furnished to patients in a Medicare-covered SNF stay, including vaccines.
References
- COVID-19 frequently asked questions (FAQs) on Medicare fee-for-service (FFS) billing
- COVID-19 provider toolkit
- COVID-19 vaccines and monoclonal antibodies payment
- Medicare billing for COVID-19 vaccine shot administration
- Monoclonal antibody COVID-19 infusion
- SNF: Enforcement discretion relating to certain pharmacy billing
- CMS IOM Pub. 100-02 Medicare Benefit Policy Manual, Chapter 15, Section 60
- CMS IOM Pub. 100-04 Medicare Claims Processing Manual, Chapter 18, section 10