US · guidance
CMS Pub. 100-18, ch. 7, § 50.3
Standards for E-Prescribing
Part D sponsors are required to establish electronic prescription drug programs to provide for
electronic transmittal of certain information to the prescribing provider and the dispensing
pharmacy and pharmacist. There is no requirement that prescribers or dispensers implement e-prescribing. However, prescribers and dispensers who electronically transmit prescription and
certain other prescription-related information for Medicare Part D covered drugs prescribed for
Medicare Part D eligible individuals are required to comply with any applicable final standards
that are in effect.
Part D sponsors should ensure that their pharmacy contracts require compliance with the Part
D e-prescribing standards whenever the network pharmacy electronically receives or transmits
prescriptions or prescription-related information about Part D covered drugs that are
prescribed to Part D eligible individuals. Although Part D sponsors are not required to pay for
standard e-prescribing transactions between prescribers and network pharmacies, such e-prescribing transaction costs incurred by their network pharmacies are legitimate Part D
overhead costs that should be a consideration in setting network dispensing fees.
The Medicare Modernization Act (MMA) required the identification of potential e-prescribing
standards, which the Secretary would recognize as “initial uniform standards.” These standards
would generally be subject to pilot testing prior to the promulgation of final uniform standards.
This general requirement was to be waived, however, in instances in which there was “adequate
industry experience” with an initial standard.
The Secretary recognized a number of initial standards. Three met the requirements for adequate
industry experience. The “E-Prescribing and the Prescription Drug Program” final rule, which
was published in the Federal Register on November 7, 2005, (70 FR 67568) adopted these
“foundation e-prescribing standards.” CMS refers to them as "foundation standards" because
they were the first set of final standards adopted for the Part D e-prescribing program. As
subsequently amended (see, 73 FR 18918) the foundation standards are as follows:
1. Prescription standards.
On or after April 1, 2009, The National Council for the Prescription Drug Programs
(NCPDP)Prescriber/Pharmacist Interface SCRIPT Standard, Implementation Guide,
Version 8, Release 1, (Version 8.1) October 2005, to provide for the communication of a
prescription or prescription-related information between prescribers and dispensers, for
the following:
○ Get message transaction.
○ Status response transaction.
○ Error response transaction.
○ New prescription transaction.
○ Prescription change request transaction.
○ Prescription change response transaction.
○ Refill prescription request transaction.
○ Refill prescription response transaction.
○ Verification transaction.
○ Password change transaction.
○ Cancel prescription request transaction.
○ Cancel prescription response transaction.
2. Eligibility standards.
○ For transmitting eligibility inquiries and responses between prescribers and Part D
sponsors—
The Accredited Standards Committee (ASC) X12N 270/271-Health Care Eligibility
Benefit Inquiry and Response, Version 4010, May 2000, Washington Publishing
Company, 004010X092 and Addenda to Health Care Eligibility Benefit Inquiry and
Response, Version 4010, A1, October 2002, Washington Publishing Company,
004010X092A1.
○ For transmitting eligibility inquiries and responses between dispensers and Part D
sponsors—
The NCPDP Telecommunication Standard Specification, Version 5, Release 1
(Version 5.1), September 1999, and equivalent NCPDP Batch Standard Batch
Implementation Guide, Version 1, Release 1 (Version 1.1), January 2000 supporting
Telecommunications Standard Implementation Guide, Version 5, Release 1 (Version
5.1), September 1999, for the NCPDP Data Record in the Detail Data Record.
Six other initial standards were pilot tested. Based upon the evaluation of the pilot project and
public comments CMS issued the Standards for E-Prescribing Under Medicare Part D final rule
(73 FR 18918) adopting four additional e-prescribing standards with which Part D sponsors’ e-prescribing programs must also comply. These four standards are:
1. Medication History
o To provide for the communication of Part D medication history information among
Medicare Part D sponsors, prescribers, and dispensers—
The National Council for Prescription Drug Programs Prescriber/Pharmacist Interface
SCRIPT Standard, Implementation Guide, Version 8, Release 1 (Version 8.1).
2. Prescription Fill Status Notification (RxFill)
o To provide for the communication of prescription fill status between prescribers and
dispensers—
The National Council for Prescription Drug Programs Prescriber/Pharmacist
Interface SCRIPT Standard, Implementation Guide, Version 8, Release 1 (Version
8.1).
3. Formulary and Benefits
○ For transmitting formulary and benefits information between prescribers and Part D
sponsors—
The National Council for Prescription Drug Programs Formulary and Benefits
Standard, Implementation Guide, Version 1, Release 0 (Version 1.0), October 2005.
This standard includes five separate files for providing formulary or benefit
information to the prescriber:
Formulary Status List
Formulary Alternatives List
Benefit Coverage List
Benefit Copay List
Drug Classification List
Part D sponsors must be capable of sending all of these files electronically using the
adopted standard if such information is requested, including all conditional fields for
all these files if such information is requested by prescribers.
4. Provider Identifier
o To identify an individual health care provider to Part D sponsors, prescribers and
dispensers, in electronically transmitted prescriptions or prescription-related materials
for Part D covered drugs for Part D eligible individuals—
The National Provider Identifier (NPI), as defined at 45 CFR 162.406.
In order to monitor the uptake of e-prescribing in the Part D program, Part D sponsors are
required to obtain the Prescription Origin Code via the NCPDP Telecommunication Standard
5.1 optional field 419 DJ and report this code on their prescription drug event (PDE)
submissions. A corresponding Prescription Origin Code field has been added to the PDE record
file layout and PDE return file layout at field number 41.
CMS requires the Prescription Origin Code (using alphanumeric values 1-4) only on PDEs for
new prescriptions submitted in Standard format (currently Standard format is NCPDP
Telecommunication Standard 5.1). The Prescription Origin Code will remain optional for all
PDEs for refills submitted in the Standard format and for all PDEs submitted in the Non-Standard Format. Further, the Part D sponsor has the options to report “blank” for PDEs for
refills and Non-Standard format PDEs.
History
(Rev. 11, Issued: 02-19-10, Effective/Implementation Date: 03-01-10)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-09-17
- Edition
- iom-2026-09-17
- Content hash
58534940b0ca1a8b0820bba9b4ecc9c094505652d32d52ed33e36208fa9f6ec1
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