CurrentBlue Cross Blue Shield - Rhode IslandPolicy N/A

Maximum Units

Governs application of maximum unit value claim edits for CPT and HCPCS procedure codes on professional and outpatient facility claims for BCBSRI Medicare Advantage and Commercial products, affecting providers submitting claims for members.

Policy Summary

PayerBlue Cross Blue Shield - Rhode Island

PolicyMaximum Units

Policy CodePolicy N/A

Change TypeNo material change

Effective DateSep 1, 2023

Next Review DateN/A

Key ActionDo not submit authorization; prior authorization is not applicable for maximum unit edits.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

professional & outpatientclaims affected

includes CMS MUEsmax unit sources

09/01/2023effective

08/18/2025last updated

Maximum Unit Application and Coverage Notes

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

ALL of the following

Applies to professional and outpatient facility claims coded with a CPT or HCPCS code that has a maximum unit value/edit.
Maximum unit values dictate the maximum units of service allowed for the same provider for the same member on the same calendar date of service, over a specified period of time or over a member's lifetime.
Reasons maximum units may be set include
- Centers for Medicare & Medicaid Services' (CMS) Medically Unlikely Edits (MUEs); not all CPT/HCPCS codes have an MUE assigned by CMS.
- Bilateral designation on the CMS Medicare Physician Fee Schedule (MPFS) as Indicator 1 or 3 or the term 'bilateral' included in the code descriptor.
- Service is anatomically or clinically limited with regard to the number of times it may be reported.
- The CPT or HCPCS code description indicates the number of times it can be reported during a specific time period.
- Quantity submitted exceeds historic standard practice and is unlikely based upon analysis of claims data.
- Limits determined by Blue Cross & Blue Shield of Rhode Island (BCBSRI) related to reasonable usage/provision of service.
The maximum unit value applies regardless of whether the code is reported on one line, multiple lines, or multiple claims.
Other limits to frequency of services may apply outside this policy (for example: member benefit limits, medical necessity frequency as defined in a medical policy, non-covered or investigational codes, medical policy limits, or codes requiring medical review).
Benefits may vary between groups/contracts; refer to the Evidence of Coverage, Subscriber Agreement, or Benefit Booklet for applicable coverage.

Sources and Application of Maximum Unit Values

Sources of maximum unit valuesmixed

CMS MUEs	Medically Unlikely Edits as source for maximum unit values; not all CPT/HCPCS have MUEs.
BCBSRI specific maximum units	BCBSRI maintains specific maximum unit values (link referenced in policy).

Maximum units application — how maximum units apply

Application scopeMaximum units apply to all professional and outpatient facility claims coded with a CPT or HCPCS code that has a maximum unit value/edit.

Same provider/member/dateFor most CPT/HCPCS codes, maximum units dictate the maximum units allowed for the same provider for the same member on the same calendar date of service.

Across lines/claimsThe maximum unit value applies regardless of whether the code is reported on one line, multiple lines, or multiple claims.

Extended periodsMaximum units may also apply over a specified period of time or over a member's lifetime as indicated by the code's maximum unit definition.

Key Definitions

unit of service claim edits applied against a specific CPT/HCPCS procedure code — definition of Maximum unit values

DefinitionMaximum unit values are unit of service claim edits applied to a specific CPT and/or HCPCS procedure code for services rendered by a provider/supplier to a member for a period of time.

Determination sourcesMaximum units are determined by sources including CMS MUEs, bilateral designation on CMS MPFS, code descriptors specifying frequency, anatomical/clinical limits, historical claims analysis, and BCBSRI reasonable-usage limits.

Not universalNot all CPT/HCPCS codes have an assigned CMS MUE; other sources may supply maximums where MUEs are absent.

Centers for Medicare & Medicaid Services' Medically Unlikely Edits (CMS MUEs)

AcronymCMS MUEs — Centers for Medicare & Medicaid Services' Medically Unlikely Edits.

RoleCMS MUEs are included among the sources used to set maximum unit values for CPT/HCPCS codes.

Coverage noteNot all CPT/HCPCS codes have an MUE assigned by CMS; BCBSRI may apply other limits where an MUE is not assigned.