# Prior Authorization Support (PAS)

## What is PAS?

Prior Authorization Support (PAS) enables providers to submit prior authorization requests electronically using FHIR, replacing phone, fax, and portal-based workflows.

**Official specification**: [HL7 Da Vinci Prior Authorization Support Implementation Guide](https://build.fhir.org/ig/HL7/davinci-pas/)

### Supported versions

1upHealth supports the following versions of the HL7 Da Vinci Prior Authorization Support Implementation Guide:

* STU 2.0.1


Coming soon!
Further documentation about 1up's PAS API is coming soon.