---
title: Best Practices
slug: electronic-prior-auth/guide/best-practices
docTags: 
createdAt: 2026-06-02T15:55:08.920Z
---

The following best practices apply to all ePA message types.

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[Drug Description](docId\:yQVpCe3CfxK5qB1XIgzWU)
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[Handling PARequests When a Health Plan Changes ePA Processing Vendor](docId\:E-UCMJk-sg691b7R9QQAy)
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[Prescriber Order Number](docId\:H78dhqVKge7ZgJ6YRPGUa)
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[Utilization for Non-PA Coverage Rules](docId\:KdqKt81sreK9uWfd7va6v)
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:::LinkArrayItem{headerType="NONE" docId="f_ScGlkO2H5CdrO_Le8w0"}
[Sending Prior Authorization Initiation Requests](docId\:f_ScGlkO2H5CdrO_Le8w0)
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[Electronic Appeals](docId:1TdvTrNt0Jb2DiS2zJWmK)
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[Automatically Initiating ePA for RxChange Messages](docId\:SYnh9yR__atUocKYo2gJJ)
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:::LinkArrayItem{headerType="NONE" docId="ikWPw1I6CbK98hI9zuadY"}
[PAInitiationResponse Reason Codes for PBM/Payers](docId\:ikWPw1I6CbK98hI9zuadY)
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[Re-Submitting and Re-Initiating PAInitiationRequests](docId\:lTpLVKKOtpK_zKHRKULgN)
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[NewRx](docId\:nwLCFelvCKyRHEVSYTvat)
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[Attachments](docId\:bzMHV3ox9ayS5ksbip8Zc)
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:::LinkArrayItem{headerType="NONE" docId="iAavSB2lINi0QHKVh_MY7"}
[Timing for Response](docId\:iAavSB2lINi0QHKVh_MY7)
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[NDC Codes](docId\:twln8R1xlYQ7SYKu4oRNJ)
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[Empty Tags](docId\:DSP0WEF32pPs0N4D3N4af)
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[XML NextQuestionID Clarification for PA Question Type](docId:3I1dUlxR-8DmYoqh-fhmf)
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[Controlled Substances](docId:5rntb8S6hZT4362lRhivR)
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[PBM/Payer Prior Authorization Coverage Lists](docId:7xlfcawjX699cyXuwATAi)
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[Prescription Eligibility for PA Processors (PBM/Payers, Health Plans, and Third-Party Processors)](docId:67zwBEJ3y7gZWENnqaj_j)
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[PBM/Payer Development and Integration](docId:1KFg23ufxRX0r2iPNUS6i)
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[Conditional Question Logic](docId\:YljPkT1ca9IX5ZajPHcJ9)
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[Sending and Receiving PANotifications](docId\:LFifdfqMTr5kCoBbDU8Or)
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::::





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