NIST Inferno error on valid RXNorm code from MedicationRequest.medicationCodeableConcept

[BRoberts82-CGM]

When submitting a MedicationRequest message to the FHIR NIST validator, we are getting the following error:
Bundle.entry[0].resource/MedicationRequest/278632C0-1B62-4356-81D4-2E1C57DB5049/.medication.ofType(CodeableConcept).coding[0].code: Unknown code '2619154' in the CodeSystem 'http://www.nlm.nih.gov/research/umls/rxnorm' version '??rx1' on line 40. Jump to error.
The section in error is:
"medicationCodeableConcept": {
"coding": [
{
"system": "http://www.nlm.nih.gov/research/umls/rxnorm",
"code": "2619154"
}
To our knowledge, this is a valid RXNorm code and should not error