CurrentAspirus ArisePolicy N/A

-59 Distinct Procedural Service and X-(EPSU) Modifiers

This policy governs appropriate billing and use of the -59 Distinct Procedural Service modifier and the X-(EPSU) modifiers for Aspirus Health Plan Medicare Advantage products, describing when modifiers allow separate payment by bypassing CCI edits and when they are inappropriate.

Policy Summary

PayerAspirus Arise

Policy-59 Distinct Procedural Service and X-(EPSU) Modifiers

Policy CodePolicy N/A

Change TypeNo material changes

Effective DateN/A

Next Review DateN/A

Key ActionFor PTP edits with CCMI = '1', report codes together only when using -59 or X-(EPSU) modifiers and make supporting documentation available upon request.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

5Modifier variants described

CCMI = 1PTP edits permitting modifier use

CCMI = 0PTP edits never reported together

MA productsApplies to

When Modifiers Are Appropriate

Modifier use criteria

Conditions under which modifiers are appropriate or inappropriate:

Modifiers are appropriate when services normally bundled by CCI/PTP edits are distinct given the circumstances (for example: separate encounter, separate practitioner, separate structure, or unusual non-overlapping service).

ONE of

Two services are time-based and performed sequentially or within separate and distinct timeframes during the same patient encounter.
A diagnostic procedure that precedes a surgical or non-surgical therapeutic procedure may be considered distinct if it: (1) occurs before the therapeutic procedure and is not interspersed with services required for the therapeutic intervention; (2) clearly provides the information needed to determine whether to proceed with the therapeutic procedure; and (3) is not a service that would have been required during the therapeutic intervention.

Policy Summary

PayerAspirus Arise

Policy-59 Distinct Procedural Service and X-(EPSU) Modifiers

Policy CodePolicy N/A

Change TypeNo material changes

Effective DateN/A

Next Review DateN/A

Key ActionFor PTP edits with CCMI = '1', report codes together only when using -59 or X-(EPSU) modifiers and make supporting documentation available upon request.

SourceLink

On This Page

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Applicable Modifiers and CCI/CCMI Rules

Modifiers applicable to bypass certain CCI editsModifierCovered

-59	Distinct Procedural Service modifier
-XE	Separate Encounter
-XP	Separate Practitioner
-XS	Separate Structure
-XU	Unusual Non-Overlapping Service

CCMI-based permissibility (inv-03) - Key facts

CCMI requirementModifiers may be used to report Procedure-to-Procedure code pairs only when the Correct Coding Modifier Indicator (CCMI) = '1'; code pairs with CCMI = '0' should never be reported together.

Allowed modifiers when CCMI = '1'-59, -XE, -XP, -XS, or -XU may be appended to identify separate and distinct services for PTP edits with CCMI = '1'.

DocumentationSupporting documentation is not required on the claim but must be made available upon request.

Modifier exclusivityEither -59 or one X-(EPSU) modifier may be appended to a claim line; both cannot be appended to the same procedure/service.

LimitationsModifiers that permit bypassing CCI edits do not bypass multiple surgery fee reductions, bilateral fee adjustments, or other Aspirus administrative policies.

Billing, Documentation, and Payment Effects

Documentation Required

When modifiers allow bypassing CCI edits — For PTP edits with CCMI = '1', report codes together only with -59 or X-(EPSU); include required supporting documentation

For Procedure-to-Procedure (PTP) edits with a Correct Coding Modifier Indicator (CCMI) = '1', report codes together only when an appropriate NCCI-associated modifier is appended to the claim line to indicate the services are separate and distinct. Use either -59 or one of the X-(EPSU) modifiers (-XE, -XP, -XS, -XU) as appropriate; do not append -59 and an X modifier to the same line. Supporting documentation is not required at submission but must be made available upon request to substantiate the modifier use. Eligible services will bypass CCI edits for separate payment when the modifier appropriately describes the circumstance.

Use -XE, -XP, -XS, or -XU instead of -59 when an X modifier more precisely describes the reason for separation.
Do not report -59 and an X-(EPSU) modifier together on the same line.
Make supporting documentation available upon request to justify modifier use.

Denial Risk

Limitations of modifier effects — Modifiers bypass CCI edits but do not override other payment adjustments (multiple surgery, bilateral, bundling rules); notes on denial risk

Modifiers that bypass CCI edits do not override other Aspirus Arise payment adjustments. Specifically, use of -59 or X-(EPSU) modifiers will not bypass multiple surgery fee reductions, bilateral fee adjustments, or other Aspirus administrative payment policies. Services billed with modifiers that bypass CCI edits remain subject to those payment rules and may be denied or adjusted if other policy criteria are not met — ensure modifier use is supported in the medical record and that billing also conforms to applicable multiple surgery, bilateral, and bundling rules.

Modifiers that bypass CCI edits do NOT exempt the claim from multiple surgery or bilateral reductions.
Denial risk exists if modifier use is not adequately supported or if other payment rules are violated.
Ensure documentation demonstrates distinct service circumstances (separate encounter, separate practitioner, separate structure, or unusual non-overlapping service) and aligns with timing and clinical guidance when diagnostic procedures precede therapeutic procedures.

Modifier Definitions

-XE: Separate Encounter (inv-06)

Term-XE = Separate Encounter

DefinitionA service that is distinct because it occurred during a separate encounter.

Use guidanceUse -XE when the service is distinct due to a separate encounter rather than other X-(EPSU) reasons; prefer an X- modifier over -59 if it more accurately describes the circumstance.

-XP: Separate Practitioner (inv-07)

Term-XP = Separate Practitioner

DefinitionA service that is distinct because it was performed by a different practitioner.

Use guidanceUse -XP to indicate distinction based on practitioner when reporting codes together for CCMI = '1' PTP edits; prefer -XP over -59 when it more accurately applies.

-XS: Separate Structure (inv-08)

Term-XS = Separate Structure

DefinitionA service that is distinct because it was performed on a separate organ/structure.

Use guidanceApply -XS for distinctions based on separate anatomic sites; contiguous structures in the same organ/anatomic region are considered a single site and modifiers are inappropriate.

-XU: Unusual Non-Overlapping Service (inv-09)

Term-XU = Unusual Non-Overlapping Service

DefinitionA service that is distinct because it does not overlap the usual components of the main service.

Use guidanceUse -XU when the secondary service is an unusual, non-overlapping service; prefer -XU over -59 when it more accurately describes the separation.

-59: Distinct Procedural Service (inv-10)

Term-59 Distinct Procedural Service

DefinitionIndicates that a service that would typically be bundled is separate and distinct under the circumstances and appropriate to bill separately (excluding Evaluation and Management services).

Use guidance-59 may be used when none of the X-(EPSU) modifiers more accurately describe the reason for separation; do not use -59 if an X- modifier is more precise.