Modifier code
Modifier 59: Distinct procedural service
Procedure or service distinct from other services performed same day. Use only when no more-specific NCCI-edit modifier (XE, XS, XP, XU) applies.
Code
59
When to use
When NCCI edits would otherwise bundle two procedures but they are clinically distinct (different anatomic site, separate encounter, etc.).
Common issues
- Insurer requests medical-record review
- Should use XE/XS/XP/XU instead when applicable
Frequently asked questions
What is modifier 59?
Distinct procedural service
When should it be used?
When NCCI edits would otherwise bundle two procedures but they are clinically distinct (different anatomic site, separate encounter, etc.).
Common issues when modifier is missing or wrong?
Insurer requests medical-record review; Should use XE/XS/XP/XU instead when applicable.
Other modifiers
- 25 — Significant, separately identifiable E&M service on same day as procedureWhen E&M visit + procedure happen same day and the E&M was separately documented
- 26 — Professional componentSplits a procedure into its professional (physician interpretation) and technica
- 50 — Bilateral procedureProcedure performed on both sides of the body during a single session.
- 51 — Multiple proceduresMultiple procedures performed at the same session.
- 52 — Reduced servicesService partially reduced or eliminated at the physician's discretion.
- 53 — Discontinued procedureProcedure discontinued because of extenuating circumstances.
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