MB HCPCS Level II modifier: Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access
CMS terminated MB: its last date of service was Dec 31, 2024. It stays here for looking up older claims; newer services need a current code.
Official description
MBOrdering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access
Short description: Auc hardship, insuf internet
HCPCS · United States
Medicare details
The indicators CMS publishes with MB in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Added
- Jan 1, 2020
- Terminated after
- Dec 31, 2024
Where MB sits
- 1GroupHCPCS modifiers
- 2Terminated MBOrdering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is HCPCS code MB still valid?
No. CMS terminated MB; its last date of service was Dec 31, 2024. It is listed for looking up services from before then. Use a current code for newer services.
Where is MB in the HCPCS Level II list?
MB is listed under Modifiers.
Does Medicare cover MB?
CMS lists MB’s Medicare coverage as “Carrier judgment”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside MB
All modifiersLRLaboratory round tripLSFda-monitored intraocular lens implantLTLeft side (used to identify procedures performed on the left side of the body)LUFractionated paymentM2Medicare secondary payer (msp)MAOrdering professional is not required to consult a clinical decision support mechanism due to service being rendered to a patient with a suspected or confirmed emergency medical…MCOrdering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of electronic health record or clinical decision…MDOrdering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of extreme and uncontrollable circumstancesMEThe order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professionalMFThe order for this service does not adhere to the appropriate use criteria in the clinical decision support mechanism consulted by the ordering professionalMGThe order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professionalMHUnknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider