---
title: Alternate RxChange Workflows for Prior Authorization
slug: eprescribing/guide/alternate-rxchange-workflows-for-prior-authorization
docTags: 
createdAt: 2026-06-11T13:26:23.723Z
---

# Workflow Overview

Surescripts provides multiple workflows to enable pharmacies to automate the retrospective prior authorization process.

The preferred workflow is when both the pharmacy and the prescribing system have implemented the NCPDP RxChange message. Alternatively, when the prescriber is not RxChange-enabled, Surescripts uses the structured data from the RxChangeRequest message to allow the prescriber to complete the prior authorization process electronically using Surescripts Prior Authorization Portal.

The alternate workflow provides benefits to the pharmacy RxChange for Prior Authorization workflow when communicating with prescribers who have not yet implemented RxChange including:

- Improved PA turnaround time using Electronic Prior Authorization (ePA).
- Provides PA determination to pharmacies using RxChangeResponse to close the loop.

# Alternate Workflows

Surescripts supports two alternate RxChange for PriorAuthorization workflows. In one workflow, Surescripts performs the enablement check, and in the other, the pharmacy performs the check. The following are the steps for each workflow.

## Surescripts Determines Route – RxChangeRequest to Generic SPI (Recommended)

Surescripts determines whether to route the RxChangeRequest electronically or by fax in this workflow. The pharmacy sends the RxChangeRequest to a generic SPI and Surescripts determines what the delivery route should be. If the prescriber is enabled, the message is delivered electronically, and if not the message is converted to fax.

:::hint{type="info"}
**Note:&#x20;**&#x53;urescripts uses a generic faxing template. A pharmacy-specific branding template is available upon request in some instances. The fax template provides instructions for using Surescripts Prior Authorization Portal, and it also outlines other options available to prescribers for responding to the PA notifications.
:::

1. Pharmacy processes the prescription and identifies the need for prior authorization.
2. Pharmacy sends Surescripts an RxChangeRequest to SPI “0000000000000” (a generic SPI).

:::hint{type="info" indent="2"}
**Note:&#x20;**&#x53;urescripts requires the pharmacy to send the provider’s fax number. Pharmacies should review fax number accuracy on a regular basis and have a secondary process in place if the fax process fails.
:::

3. If the RxChangeRequest is related to a NewRx, include the BenefitsCoordination from the NewRx.
   - Pharmacy should always send the IINNumber (formerly BIN).
   - The pharmacy should always send the ProcessorIdentificationNumber (PCN), if known.
4. Surescripts attempts to match the provider demographics in the RxChangeRequest to a provider with an RxChange service level in the Surescripts Directory.

:::Paragraph{indent="1"}
a. If Surescripts finds a match:
:::

:::Paragraph{indent="2"}
i. Surescripts sends the RxChangeRequest to the provider’s RxChange-enabled SPI.
:::

:::Paragraph{indent="2"}
ii. Prescribing vendor receives the RxChangeRequest and initiates the prior authorization with the PBM (pharmacy benefit manager)/payer identified in the BenefitsCoordination composite.
:::

:::hint{type="info" indent="2"}
**Note:&#x20;**&#x49;f the SPI is not ePA-enabled, Surescripts can append the Note field with a transaction (TRX) code on behalf of the sending pharmacy. This TRX code can be used by the prescriber to complete the prior authorization within Surescripts Prior Authorization Portal. The TRX code with the portal URL will be appended to the Note field only if there are available characters per the schema. Surescripts will not edit or remove any existing pharmacy notes. The TRX code will only be added to the Note field from pharmacies that have opted into this service.
:::

:::Paragraph{listRestartPolite="3" indent="2"}
iii. Prescribing vendor completes the ePA process with the PBM/payer.
:::

:::Paragraph{listRestartPolite="4" indent="2"}
iv. Prescribing vendor sends an RxChangeResponse to the pharmacy via Surescripts and notes whether the prior authorization was approved or denied.
:::

:::Paragraph{indent="1"}
b. If Surescripts does not find a match:
:::

:::Paragraph{indent="2"}
i. Surescripts faxes a prior authorization notification including directions for completing the PA to the prescriber using the pharmacy-provided fax number. The fax includes a Surescripts-generated unique TRX code which can be used to retrieve and initiate the PA on Surescripts Prior Authorization Portal so it can be completed electronically.
:::

:::hint{type="info" indent="2"}
**Note:&#x20;**&#x4F;nce Surescripts generates the unique TRX code, the prescriber has seven days to sign into Surescripts Prior Authorization Portal to complete the PA. The TRX code expires after that time.
:::

:::Paragraph{listRestartPolite="2" indent="2"}
ii. If the prescriber chooses Surescripts Prior Authorization Portal, the prescriber uses the unique TRX code that is found on the fax to initiate the PA.
:::

:::Paragraph{indent="2"}
iii. Once the ePA process is complete, Surescripts sends an RxChangeResponse to the pharmacy with an approval/denial response and the authorization number, if applicable.
:::

:::Paragraph{indent="2"}
iv. The RxChangeResponse is addressed from 8398058138001, not the generic SPI the pharmacy initially addressed the RxChangeRequest to.
:::

:::hint{type="info" indent="2"}
**Note:&#x20;**&#x49;n cases where the prescriber does not complete the PA using Surescripts Electronic Prior Authorization or Prior Authorization Portal, Surescripts cannot send an RxChangeResponse as the NCPDP standard does not have an appropriate reason when the outcome of the PA is unknown. Pharmacies should utilize a secondary process for notifying the prescriber if they do not receive an RxChangeResponse after 48 hours.
:::

## Pharmacy Checks Directory to Determine Route – Surescripts Faxes

The pharmacy checks the Surescripts directory to determine the prescriber’s RxChange enablement. If the prescriber has the RxChange service level, the pharmacy follows the normal flow and sends the message electronically. If not, Surescripts converts the message to fax.

:::hint{type="info"}
**Note:&#x20;**&#x53;urescripts uses a generic fax template. A pharmacy-specific branding template is available upon request in some instances. The fax template provides instructions for using Surescripts Prior Authorization Portal, and it also outlines other options available to prescribers for responding to the PA notifications.
:::

1. Pharmacy processes the prescription and identifies the need for prior authorization.
2. Pharmacy attempts to match the provider demographics to a provider with an RxChange service level in the Surescripts Directory.

:::Paragraph{indent="1"}
a. If the pharmacy finds a match:
:::

:::Paragraph{indent="2"}
i. The pharmacy sends the RxChangeRequest to the prescriber’s RxChange-enabled SPI and follows the normal RxChange workflow.
:::

:::hint{type="info" indent="2"}
**Note:&#x20;**&#x49;f the SPI is not ePA-enabled, Surescripts can append the Note field with a transaction (TRX) code on behalf of the sending pharmacy. This TRX code can be used by the prescriber to complete the prior authorization within Surescripts Prior Authorization Portal. The TRX code with the portal URL will be appended to the Note field only if there are available characters per the schema. Surescripts will not edit or remove any existing pharmacy notes. The TRX code will only be added to the Note field from pharmacies that have opted into this service.
:::

:::Paragraph{indent="1"}
b. If the pharmacy does not find a match or if the provider is not in the Surescripts Directory:
:::

:::Paragraph{indent="2"}
i. The pharmacy sends Surescripts an RxChangeRequest to SPI “0000000000000” (a generic SPI).
:::

:::hint{type="info" indent="2"}
**Note:&#x20;**&#x53;urescripts requires the pharmacy to send the provider’s fax number in the RxChangeRequest.
:::

:::Paragraph{listRestartPolite="2" indent="2"}
ii. If the RxChangeRequest is related to a NewRx, include the BenefitsCoordination from the NewRx.
:::

:::Paragraph{listStyleType="disc" indent="4"}
Pharmacy should always send the IINNumber (formerly BIN).
:::

:::Paragraph{listStyleType="disc" indent="4"}
The pharmacy should always send the ProcessorIdentificationNumber (PCN), if known.
:::

:::Paragraph{indent="2"}
iii. Surescripts attempts to match the prescriber demographics to a prescriber with an RxChange service level in the Surescripts Directory.
:::

:::Paragraph{indent="1"}
c. If Surescripts finds a match:
:::

:::Paragraph{indent="2"}
i. Follow **step 4a** in the [Surescripts Determines Route –  RxChangeRequest to Generic SPI (Recommended)](docId\:l3s6VKubx5ercsnnjMPgf) section.
:::

:::Paragraph{indent="1"}
d. If Surescripts does not find a match:
:::

:::Paragraph{indent="2"}
i. Follow **step 4b** in the [Surescripts Determines Route –  RxChangeRequest to Generic SPI (Recommended)](docId\:l3s6VKubx5ercsnnjMPgf) section.
:::

# Key Elements of the RxChangeRequest

:::hint{type="info"}
- Pharmacies sending the RxChangeRequest to the generic Surescripts SPI “0000000000000" are required to send valid RxChange transactions. The requirements in this section define elements required to be included in the transaction for this workflow. This may include data that is now optional in the schema, or explains what data is required for the actual field. Refer to the schema for additional requirements.
- Fields listed in the table below are required. If applicable fields are not sent, it may prevent the RxChange from being processed properly. Refer to the NCPDP SCRIPT Schema listed in Document References for a complete list of fields.
:::

| **Element Name**                                                                                                               | **Comments**                                                                                                                    |
| ------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------- |
| **Header**                                                                                                                     |                                                                                                                                 |
| To                                                                                                                             | The identification of the intended receiver of the message.<br />To must be populated with SPI “0000000000000” (a generic SPI). |
| **Patient**                                                                                                                    |                                                                                                                                 |
| HumanPatient                                                                                                                   |                                                                                                                                 |
| Address                                                                                                                        |                                                                                                                                 |
| <font color="#000000">  </font>AddressLine1                                                                                    | Contains the patient’s demographic information.                                                                                 |
|   City                                                                                                                         | Contains the patient’s demographic information.                                                                                 |
|   State                                                                                                                        | Contains the patient’s demographic information.                                                                                 |
|   ZipCode                                                                                                                      | Contains the patient’s demographic information.                                                                                 |
| **Prescriber**                                                                                                                 |                                                                                                                                 |
|   Fax Number                                                                                                                   | Contains the prescriber’s fax number in at least one element.                                                                   |
| **Benefits Coordination**<br />**Note:** The pharmacy should include the information for the PBM/payer who rejected the claim. |                                                                                                                                 |
| PayerIdentification                                                                                                            | Contains the PBM/payer’s Surescripts Participant ID.                                                                            |
|   IINNumber                                                                                                                    | Contains the health plan’s Card Issuer ID or Issuer Identification Number.                                                      |
|   ProcessorIdentificationNumber                                                                                                | Contains the health plan’s PCN, if known.                                                                                       |
| GroupID                                                                                                                        | Contains the health plan’s group number, if available.                                                                          |

# Key Elements of the RxChangeResponse

This section outlines some of the key elements on the RxChangeResponse for the prior authorization workflow. These elements are sent to the pharmacy to provide visibility into the outcome of the prior authorization. Refer to the NCPDP SCRIPT Schema listed in Document References for a complete list of elements.

| **Element Name**          | **Comments**                                                                                        |
| ------------------------- | --------------------------------------------------------------------------------------------------- |
| **Medication Prescribed** |                                                                                                     |
| PriorAuthorization        | Prescribing vendor systems should send the prior authorization number, if provided by the PBM/payer |
| PriorAuthorizationStatus  | The status of the prescription’s prior authorization as known by the sender.                        |

