Billing with code modifiers

Code modifiers help further describe a procedure code without changing the definition of the code. Modifiers can be found in the CPT (Current Procedural Terminology) and HCPCS (HCFA Common Procedural Coding System) code books.

Some modifiers are more easily misused, and for them we provide additional guidance.

• Using modifier 22, unusual procedural services
• Modifier 25, significant service separate from E&M service
  
• Using procedure modifiers 50 & 51
• Modifiers 54 and 55, surgical care and post-op care
  
• Using modifier 59, distinct procedural service
  
• Modifier 62, two surgeons
• Using modifiers 80, 81, 82: assistant at surgery
  

More coding advice is available under specific services and procedures topics in this section.