Two Shot Same Day Exception Rules for COVID-19
The This page specifies the COVID-19 logic implemented by ICE for recommendations before September 12, 2023.
For COVID-19 logic for recommendations as of September 12, 2023 onwards, see COVID-19 Vaccine Group - September 2023 Onwards.
Two Shot Same Day Exception Rules for COVID-19
For COVID-19 shots administered:
- before 10/25/2021, the Duplicate Shot, Same Day rules do
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- NOT apply because absolute minimum intervals between dose 1 and dose 2 = 0 days (before 10/25/2021) in both the Pfizer COVID-19 2-dose
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- series and Moderna COVID-19 2-dose
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- series.
- on or after 10/25/2021, the Duplicate Shot, Same Day rules apply because absolute minimum intervals between dose 1 and dose 2 > 0 days (on or after 10/25/2021) in both the Pfizer COVID-19 2-dose series and Moderna COVID-19 2-dose series.
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COVID-19 Vaccine Group Evaluation and Forecasting Rules
General Rules for COVID-19
General rules are not series-specific; general rules apply to the entire vaccine group.
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- Once a patient completes:
- either the Pfizer COVID-19 2-dose series or the Moderna COVID-19 2-dose series, the Recommendation is Conditional and the reason code is COMPLETE_HIGH_RISK. either the Pfizer COVID-19 2-dose series or the Moderna COVID-19 2-dose series AND receives an additional dose1, the Recommendation is Not Series,
- either the Pfizer COVID-19 2-dose series or the Moderna COVID-19 2-dose series, the Recommendation is Conditional and the reason code is COMPLETE_HIGH_RISK. either the Pfizer COVID-19 2-dose series or the Moderna COVID-19 2-dose series AND receives an additional dose1, the Recommendation is Not Series,
Combination Vaccines that Include COVID-19
No combination vaccines exist, at this time, that include COVID-19 and count toward completion of the Pfizer COVID-19 2-dose series.
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CVX Code Specific RulesCVX Code Absolute Minimum Age
Rule for CVX 213
Rules for an Additional Dose1
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Notes
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COVID-19 Vaccines
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CVX Code
...
Name
...
Moderna COVID-19 Vaccine
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208
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Pfizer COVID-19 Vaccine
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500
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COVID-19 Non-US Vaccine, Product Unknown
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501
...
COVID-19 IV Non-US Vaccine (QAZCOVID-IN)
...
502
...
COVID-19 IV Non-US Vaccine (COVAXIN)
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503
...
COVID-19 LAV Non-US Vaccine (COVIVAC)
...
504
...
COVID-19 VVnr Non-US Vaccine (Sputnik Light)
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505
...
COVID-19 VVnr Non-US Vaccine (Sputnik V)
...
506
...
COVID-19 VVnr Non-US Vaccine (CanSino Biological Inc./Beijing Institute of Biotechnology)
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507
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COVID-19 PS Non-US Vaccine (Anhui Zhifei Longcom Biopharmaceutical + Institute of Microbology Chinese academy of Sciences)
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508
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COVID-19 PS Non-US Vaccine (Jiangsu Province Centers for Disease Control and Prevention)
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509
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COVID-19 PS Non-US Vaccine (EpiVacCorona)
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510
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COVID-19 IV Non-US Vaccine (BIBP, Sinopharm)
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511
...
COVID-19 IV Non-US Vaccine (CoronaVac, Sinovac)
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Doses
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Series Name
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Absolute Minimum Interval
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Minimum Recommended Interval
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Dose 1 to 2
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Pfizer COVID-19 2-dose Series
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0 days
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The following set of rules apply to 1) COVID-19 Vaccines Not Authorized by FDA, but Authorized by WHO and, 2) COVID-19 Vaccines Not Authorized by FDA or WHO, but is an Active COVID-19 Vaccine Candidate
Rules for COVID-19 Vaccines Not Authorized by FDA2
Rules for an Additional Dose1
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Notes
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Immunization Series and Selection Rules
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Series Name
Series Selection RulesThere are three series for this vaccine group: the Pfizer COVID-19 2-dose series, Moderna COVID-19 2-dose series, and Janssen COVID-19 1-dose series. The rules for determining which series applies are:
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Immunization Series: Pfizer COVID-19 2-dose Series
The Pfizer COVID-19 2-dose series is complete after 2 doses.
Vaccine Dose Parameters - Minimum and Routine Ages
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Dose
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Series Name
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Absolute Minimum
Age
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Routine
Age
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1
...
Pfizer COVID-19 2-dose Series
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0 days
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2
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Pfizer COVID-19 2-dose Series
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0 days
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12 years
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Vaccine Dose Parameters - Minimum and Recommended Intervals
Rules for Booster Dose2Any of the FDA-Approved COVID-19 vaccines (except CVX 218) can be used for booster vaccination, regardless of the vaccine product used for primary vaccination. When a heterologous or “mix and match” booster dose is administered, the eligible population and dosing intervals are those of the vaccine used for primary vaccination. Recommendation Rules for Booster Dose or Requirement for a Dose with a Bivalent Vaccine
Evaluation Rules for Booster Dose
Rules for Evaluation of Extra Shots After Additional Dose1 and/or Booster Doses and/or Needed Bivalent Dose2
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Notes
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COVID-19 Vaccines
CVX Code | Name | Absolute Minimum Age | Absolute Maximum Age | Counts towards U.S. Vaccination |
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207 | Moderna COVID-19 Vaccine | 0 days | Yes | |
208 | Pfizer COVID-19 Vaccine | 0 days | Yes | |
210 | AstraZeneca COVID-19 Vaccine | 0 days | Yes | |
211 | Novavax COVID-19 Vaccine | 0 days | Yes | |
212 | Janssen COVID-19 Vaccine | 0 days | Yes | |
213 | SARS-COV-2 (COVID-19) vaccine, UNSPECIFIED | 0 days | Yes | |
217 | Pfizer COVID-19 Vaccine (>= 12 years) | 0 days | Yes | |
218 | Pfizer COVID-19 Vaccine | 0 days | 18 years - 1 day | Yes |
219 | Pfizer COVID-19 Vaccine | 0 days | 6 years - 1 day | Yes |
221 | Moderna COVID-19 Vaccine | 0 days | Yes | |
227 | Moderna COVID-19 Vaccine (Inactive) | 0 days | 13 years - 1 day | Yes |
228 | Moderna COVID-19 Vaccine | 0 days | 7 years - 1 day | Yes |
229 | Moderna COVID-19 Vaccine, Bivalent | 0 days | Yes | |
230 | Moderna, COVID-19 Vaccine, Bivalent Booster | 0 days | 7 years - 1 day | Yes |
300 | Pfizer COVID-19 Vaccine, Bivalent | 0 days | Yes | |
301 | Pfizer COVID-19 Vaccine, Bivalent | 0 days | 12 years - 1 day | Yes |
302 | Pfizer, COVID-19 Vaccine, Bivalent | 0 days | 6 years - 1 day | |
500 | COVID-19 Non-US Vaccine, Product Unknown | No | ||
501 | COVID-19 IV Non-US Vaccine (QAZCOVID-IN) | No | ||
502 | COVID-19 IV Non-US Vaccine (COVAXIN) | 0 days | Yes | |
503 | COVID-19 LAV Non-US Vaccine (COVIVAC) | No | ||
504 | COVID-19 VVnr Non-US Vaccine (Sputnik Light) | No | ||
505 | COVID-19 VVnr Non-US Vaccine (Sputnik V) | No | ||
506 | COVID-19 VVnr Non-US Vaccine (CanSino Biological Inc./Beijing Institute of Biotechnology) | No | ||
507 | COVID-19 PS Non-US Vaccine (Anhui Zhifei Longcom Biopharmaceutical + Institute of Microbology Chinese academy of Sciences) | No | ||
508 | COVID-19 PS Non-US Vaccine (Jiangsu Province Centers for Disease Control and Prevention) | No | ||
509 | COVID-19 PS Non-US Vaccine (EpiVacCorona) | No | ||
510 | COVID-19 IV Non-US Vaccine (BIBP, Sinopharm) | 0 days | Yes | |
511 | COVID-19 IV Non-US Vaccine (CoronaVac, Sinovac) | 0 days | Yes | |
512 | COVID-19 VLP Non-US Vaccine (Medicago, Covifenz) | 18 years - 4 days | Yes | |
513 | COVID-19 PS Non-US Vaccine (Anhui Zhifei Longcom, Zifivax) | No | ||
514 | COVID-19 DNA Non-US Vaccine (Zydus Cadila, ZyCoV-D) | No | ||
515 | COVID-19 PS Non-US Vaccine (Medigen, MVC-COV1901) | No | ||
516 | COVID-19 Inactivated Non-US Vaccine (Minhai Biotechnology Co, KCONVAC) | No | ||
517 | COVID-19 PS Non-US Vaccine (Biological E Limited, Corbevax) | No | ||
518 | COVID-19 Inactivated, Non-US Vaccine (VLA2001, Valneva) | No | ||
519 | COVID-19 mRNA, bivalent, original/Omicron BA.1, Non-US Vaccine (Spikevax Bivalent), Moderna | 0 days | Yes | |
520 | COVID-19 mRNA, bivalent, original/Omicron BA.1, Non-US Vaccine Product, Pfizer-BioNTech | 0 days | Yes | |
521 | COVID-19 SP, protein-based, adjuvanted (VidPrevtyn Beta), Sanofi-GSK | No |
Combination Vaccines that Include COVID-19
No combination vaccines exist, at this time, that include COVID-19 and count toward completion of the Pfizer COVID-19 2-dose series.
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CVX Code Specific RulesCVX Code Absolute Minimum Age
CVX Code Absolute Maximum Age
Rule for CVX 218, CVX 219, CVX 227, CVX 228, CVX 229, CVX 230, CVX 301, CVX 302
Rule for Bivalent Vaccines (CVX 229, CVX 230, CVX 300, CVX 301, CVX 301, CVX 519, CVX 520)
Rule for CVX 213
Rules for COVID-19 Vaccines Not Authorized by FDA2The following set of rules apply to 1) COVID-19 Vaccines Not Authorized by FDA, but Authorized by WHO and, 2) COVID-19 Vaccines Not Authorized by FDA or WHO, but is an Active COVID-19 Vaccine Candidate as part of a U.S.-based Clinical Trial of a COVID-19 Vaccine.
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Notes
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Immunization Series and Selection Rules
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Series Name
Series Selection RulesThere are five series for this vaccine group: Pfizer COVID-19 Series, Moderna COVID-19 Series, Mixed Product COVID-19 Series, Janssen COVID-19 Series, and Novavax COVID-19 Series. The rules for determining which series applies are:
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Immunization Series: Pfizer COVID-19 Series
The Pfizer COVID-19 Series is complete after 2 or 3 doses, depending on age (not including booster dose(s)).
Vaccine Dose Parameters - Minimum and Routine Ages
Dose | Series Name | Absolute Minimum Age | Minimum Age | Routine Age | Latest Recommended Age (less than) | Valid CVX Code(s) per Dose for this Series | Invalid CVX Code(s) per Dose for this Series |
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1 | Pfizer COVID-19 Series | 0 days | 6 months | 6 months | N/A | 208, 217, 218, 219, 300, 301, 302 | 229, 230 |
2 | Pfizer COVID-19 Series | 0 days | 6 months | 6 months | N/A | 208, 217, 218, 219, 300, 301, 302 | 229, 230 |
3 | Pfizer COVID-19 Series | 0 days | 6 months | 6 months | N/A | 208, 217, 218, 219, 300, 301, 302 | 229, 230 |
Vaccine Dose Parameters - Minimum and Recommended Intervals
Doses | Series Name | Absolute Minimum Interval | Minimum Interval | Recommended Interval | Latest Recommended Interval (less than) |
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Dose 1 to 2 | Pfizer COVID-19 Series | 8 weeks - 4 days if dose 2 administered >= 4/19/2023 and dose 1 administered >= 5 years of age Otherwise, 17 days | 8 weeks if the execution date is >= 4/19/2023 and dose 1 was administered >= 5 years of age Otherwise, 21 days | 8 weeks if the execution date is >= 4/19/2023 and dose 1 was administered >= 5 years of age Otherwise, 21 days |
N/A |
Dose 2 to 3 | Pfizer COVID-19 Series | 8 weeks - 4 days | 8 weeks | 8 weeks | N/A |
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Series Special Rules
Vaccine to Recommend
Skip Dose Rule
Rule for CVX 212 (Janssen COVID-19 vaccine)
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Immunization Series: Moderna COVID-19 Series
The Moderna COVID-19 series is complete after 2 doses(not including booster dose(s)).
Vaccine Dose Parameters - Minimum and Routine Ages
Dose | Series Name | Absolute Minimum | Minimum Age | Routine | Latest Recommended Age (less than) | Valid CVX Code(s) per Dose for this Series | Invalid CVX Code(s) per Dose for this Series |
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1 | Moderna COVID-19 Series | 0 days | 6 months | 6 months | N/A | 207, 221, 227, 228, 229 | N/A |
2 | Moderna COVID-19 Series | 0 days | 6 months | 6 months | N/A | 207, 221, 227, 228, 229 | N/A |
Vaccine Dose Parameters - Minimum and Recommended Intervals
Doses | Series Name | Absolute Minimum Interval | Minimum Interval | Recommended Interval | Latest Recommended Interval (less than) |
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Dose 1 to 2 | Moderna COVID-19 | 0 days if dose 2 administered < 10/25/2021 8 weeks - 4 days if dose 2 administered >= 4/19/2023 and dose 1 administered >= 6 years of age Otherwise, 24 days if dose 2 administered >= 10/25/2021 | 8 weeks if the execution date is >= 4/19/2023 and dose 1 was administered >= 6 years of age Otherwise, 28 days | 8 weeks if the execution date is >= 4/19/2023 and dose 1 administered >= 6 years of age Otherwise, 28 days | N/A |
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Series Special Rules
Vaccine to Recommend
Rule for CVX 212 (Janssen COVID-19 vaccine)
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Immunization Series: Mixed Product COVID-19 Series
The Mixed Product COVID-19 Series is complete after 2 or 3 doses, depending on age(not including booster dose(s)).
Vaccine Dose Parameters - Minimum and Routine Ages
Dose | Series Name | Absolute Minimum | Minimum Age | Routine | Latest Recommended Age (less than) | Valid CVX Code(s) per Dose for this Series | Invalid CVX Code(s) per Dose for this Series |
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1 | Mixed Product COVID-19 Series | 0 days | 6 months | 6 months | N/A | 207, 208, 211, 213, 217, 218, 219, 221, 227, 228, 300, 301, 302 | 229, 230 |
2 | Mixed Product COVID-19 Series | 0 days | 6 months | 6 months | N/A | 207, 208, 211, 213, 217, 218, 219, 221, 227, 228, 300, 301, 302 | 229, 230 |
3 | Mixed Product COVID-19 Series | 0 days | 6 months | 6 months | N/A | 207, 208, 211, 213, 217, 218, 219, 221, 227, 228, 300, 301, 302 | 229, 230 |
Vaccine Dose Parameters - Minimum and Recommended Intervals
Doses | Series Name | Absolute Minimum Interval | Minimum Interval | Recommended Interval | Latest Recommended Interval (less than) |
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Dose 1 to 2 | Mixed Product COVID-19 Series | 8 weeks - 4 days if dose 2 administered >= 4/19/2023 and dose 1 administered >= 5 years of age Otherwise:
| 8 weeks if the execution date is >= 4/19/2023 and dose 1 was administered >= 5 years of age Otherwise, 28 days | 8 weeks if the execution date is >= 4/19/2023 and dose 1 was administered >= 5 years of age Otherwise, 28 days | N/A |
Dose 2 to 3 | Mixed Product COVID-19 Series | 8 weeks - 4 days | 8 weeks | 8 weeks | N/A |
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Doses
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Series Name
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Absolute Minimum Interval
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Recommended Interval
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Dose 1 to 2
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Moderna COVID-19 2-dose Series
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0 days
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Series Special Rules
Rule for CVX 212 (Janssen COVID-19 Vaccine)
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Immunization Series: Moderna COVID-19 2-dose series
The Moderna COVID-19 2-dose series is complete after 2 doses.
Vaccine Dose Parameters - Minimum and Routine Ages
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Dose
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Series Name
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Absolute Minimum
Age
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Routine
Age
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Latest Recommended Age (less than)
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1
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Moderna COVID-19 2-dose Series
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0 days
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18 years
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N/A
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2
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Moderna COVID-19 2-dose Series
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N/A
Vaccine Dose Parameters - Minimum and Recommended Intervals
Vaccine to Recommend
Skip Dose Rule
Rule for CVX 211 (Novavax COVID-19 vaccine)
Rule for CVX 212 (Janssen COVID-19 vaccine)
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Immunization Series: Janssen COVID-19 Series
The Janssen COVID-19 Series is complete after 1 dose.
Vaccine Dose Parameters - Minimum and Routine Ages
Dose | Series Name | Absolute Minimum | Minimum Age | Routine | Latest Recommended Age (less than) | Valid CVX Code(s) per Dose for this Series | Invalid CVX Code(s) per Dose for this Series |
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1 | Janssen COVID-19 Series | 0 days | 18 years | 18 years | N/A | 212 | N/A |
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Series Special Rules
Rule for CVX 212 (Janssen COVID-19 Vaccine)
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Immunization Series:
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Novavax COVID-19
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Series
The Janssen Novavax COVID-19 1-dose Series is complete after 1 dose 2 doses (not including booster dose(s)).
Vaccine Dose Parameters - Minimum and Routine Ages
Dose | Series Name | Absolute Minimum | Minimum Age | Routine | Latest Recommended Age (less than) | Valid CVX Code(s) per Dose for this Series | Invalid CVX Code(s) per Dose for this Series |
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1 |
Novavax COVID-19 |
Series |
12 years - 4 days |
12 years |
12 years | N/A |
211 | |||||
2 | Novavax COVID-19 Series | 12 years - 4 days | 12 years | 12 years | N/A |
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Series Special Rules
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211 |
Vaccine Dose Parameters - Minimum and Recommended Intervals
Doses | Series Name | Absolute Minimum Interval | Minimum Interval | Recommended Interval | Latest Recommended Interval (less than) |
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Dose 1 to 2 | Novavax COVID-19 Series | 17 days | 21 days | 21 days | 8 weeks |