# HealthImaging Warning Codes
<a name="reference-warning-codes"></a>

HealthImaging attempts to import all your medical imaging data. If data non-conformances or unrecognized data elements are encountered during imports, HealthImaging will add one of the following warnings to the `warning.ndjson` file. A warning associated with an imported instance will also be searchable via the `SearchDICOMInstances` action with the `WarningReason` element. Instances imported with a warning may have reduced support via HealthImaging APIs, as described below.


**HealthImaging Import Warning Codes**  
<a name="warning-codes"></a>[See the AWS documentation website for more details](http://docs.aws.amazon.com/healthimaging/latest/devguide/reference-warning-codes.html)