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Medical Billing: Modifier Case-Study Trap Pack
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Avg score: 77% Most missed: “Modifier -59 is generally used to indicate:”

Modifiers communicate why a code is valid despite edits: separate services, distinct procedures, professional/technical components, laterality, etc.

Common traps: using a modifier to “force payment” without documentation, confusing -25 vs -59, and mixing -TC/-26 incorrectly.

Worked example (mini):
Same day: patient has an office visit for new symptoms + a minor procedure.
 If E/M is significant and separately identifiable beyond the procedure’s pre/post work → E/M + modifier -25.

Medical Billing: Modifier Case-Study Trap Pack
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6 Questions

1. Modifier -26 typically indicates:
2. Modifier -59 is generally used to indicate:
3. If a facility bills global imaging incorrectly and also bills -26 separately for the same study, what’s the likely result?
4. Which is a classic incorrect use of -25?
5. Modifier -25 is best used when:
6. Modifier -TC typically indicates: