Modifier 24
Unrelated E/M service by the same physician during a post-operative period
✅ When to Use Modifier 24
When an E/M service for a problem UNRELATED to the original surgery is provided during the global post-op period.
⛔ When NOT to Use Modifier 24
Do NOT use for routine post-op follow-up visits — those are included in the surgical package.
📋 Documentation Requirements
Document the unrelated diagnosis and that it is not related to the surgical procedure.
Coding Tips for Modifier 24
Real-world specialist guidance from the PayerReady Medical Coding Team, including audit triggers, denial patterns, and payer policy variations.
Unrelated E/M during a global period. The diagnosis on the E/M claim must be different from the diagnosis on the original surgical claim, otherwise expect bundling denial. Document the new problem clearly, do not chart it as a routine post-op visit.
Modifier 24 FAQ
What does modifier 24 mean? +
Unrelated E/M service by the same physician during a post-operative period
When should I use modifier 24? +
When an E/M service for a problem UNRELATED to the original surgery is provided during the global post-op period.
When should I NOT use modifier 24? +
Do NOT use for routine post-op follow-up visits — those are included in the surgical package.
What documentation is required for modifier 24? +
Document the unrelated diagnosis and that it is not related to the surgical procedure.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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