Modifier Reference Hub

Complete guide to medical coding modifiers, usage rules, and payer acceptance.

Individual Modifiers

• 22. Modifier 22: Increased Procedural Services
• 25. Modifier 25: Significant, Separately Identifiable Evaluation and Management Service
• 26. Modifier 26: Professional Component
• 50. Modifier 50: Bilateral Procedure
• 51. Modifier 51: Multiple Procedures
• 52. Modifier 52: Reduced Services
• 53. Modifier 53: Discontinued Procedure
• 54. Modifier 54: Surgical Care Only (Intraoperative Service)
• 55. Modifier 55: Postoperative (Post-Op) Care Only
• 56. Modifier 56: Preoperative (Pre-Op) Care Only
• 59. Modifier 59: Distinct Procedural Service
• 62. Modifier 62: Two Surgeons (Co-Surgeon)
• 63. Modifier 63: Procedure on Infant
• 66. Modifier 66: Surgical Team Procedure
• 76. Modifier 76: Repeat Procedure, Same Physician, Same Day
• 77. Modifier 77: Repeat Procedure, Same Patient, Different Physician, Same Day
• 91. Modifier 91: Repeat Clinical Diagnostic Laboratory Test
• 95. Modifier 95: Synchronous, Real-Time Telehealth E/M Service
• tc. Modifier TC: Technical Component
• xe. Modifier XE: Separate Encounter, Same Day
• xp. Modifier XP: Separate Practitioner, Same Day
• xs. Modifier XS: Separate Anatomical Site or Organ
• xu. Modifier XU: Unusual, Nonrelated (Non-Overlapping) Service

Modifier Guides

• Modifiers 25 and 59: Using Both on the Same Claim
• Modifier 59 and Subset Modifiers: When to Use Each
• Modifier 76 vs 77: Repeat Procedures by Same or Different Physician
• Add-On Codes: Definition, Rules, and Modifier Restrictions
• Bilateral Procedure Coding: Modifier 50 Rules and Alternatives
• NCCI Bundling Edits and Modifier Override Strategy
• Cardiology Procedure Modifiers: Stress Tests, Echos, Catheterization, and Device Monitoring
• Professional and Technical Component Billing: Modifiers 26 and TC
• Appealing Modifier-Related Denials: Strategy and Timeline
• Troubleshooting Denied Modifier Claims
• Appealing Modifier-Related Denials: Checklist and Execution
• Multiple Procedures in Single Session: Modifier 51 and Reductions
• Orthopedic-Specific Modifiers: Fractures, Joints, Arthroscopy, and Spine Surgery
• Surgical Procedure Modifiers: Global Period, Assistants, and Complexity
• Telehealth E/M Services: Modifiers 95 and 96