Raw FHIR gives you a code. FHIRfly gives you the provider, the drug, the lab, the specialty — names humans read, sourced daily from official registries.

The same code, before and after. One call adds the meaning your app was missing.
{
"system": "…/icd-10-cm",
"code": "E11.9"
}{
"code": "E11.9",
"display": "Type 2 diabetes mellitus without complications",
"chapter": "Endocrine & metabolic",
"billable": true
}21+ healthcare data types — each returning names, not just identifiers.