Inferno does not validate this date is truncated, however the UDS+ testing sandbox does.
Please update the IG to call out that this date needs to be truncated as well.
The updates being done for 1.0.2 will be pushed to include these date truncation requirements as constraints and will be incorporated into INFERNO also and can be validated before submitting data to HRSA.
Asserted Date is not listed among the dates that need to be truncated to year under the "Date Truncation" section of the UDS+ Diagnosis Resource IG page (https://fhir.org/guides/hrsa/uds-plus/StructureDefinition-uds-plus-diagnosis.html)
Inferno does not validate this date is truncated, however the UDS+ testing sandbox does. Please update the IG to call out that this date needs to be truncated as well.