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.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Related Modifiers
Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team