Using 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.
- AI modifier
- Anatomic modifiers
- Anesthesia modifiers
- AT: Active treatment
- GA and GY: Medicare non-coverage notification
- GN, GO & GP: Therapy type
- UD and UA: Treated and released or admitted/transferred (Medicaid only)
- XE, XS, XP, XU: Distinct services
- 22: Unusual procedural services
- 25: Significant service separate from E&M service
- 26 and TC: Professional and technical components
- 33: Preventive service
- 50 & 51: Bilateral and multiple procedures
- 52: Reduced services
- 53: Discontinued procedure
- 54 & 55: Surgical care and post-op care
- 56: Pre-operative management only
- 57: E&M service same day or before major surgery
- 59: Distinct procedural service
- 62: Two surgeons
- 73 & 74: Discontinued outpatient surgery
- 76 & 77: Repeated procedures, same day
- 78: Unplanned return to operating room
- 80, 81, 82: Assistant at surgery
- Status claims
- Claims Inquiry tool guide
- Edits Checker tool guide
- Claim deadlines
- Set up electronic payments
- BH provider billing
- Facility billing
- Advanced practice professional billing
- Professional billing
More billing topics:
- ACA non-payment grace period
- Ambulatory surgery center billing
- Balance billing
- Clinical edits
- Check reissue procedure
- COB: Coordination of benefits
- Correcting claims
- Correcting overpayments & underpayments
- Diagnosis coding
- Dual-eligible members
- Front-end rejections
- Gender-specific services
- Medicaid billing
- Modifiers
- NDC numbers on drug claims
- Office-based procedures billing
- Risk adjustment
- Unlisted codes, drugs & supplies