Left side (Used to identify item provided for the left side of the body)

This modifier is used to identify procedures performed on left side of body. Be sure to determine if HCPCS modifier LT is applicable for a particular procedure code. It does not affect allowed amount on a claim; however, lack of a required modifier can cause denials or development to occur.

Correct Use

• Append to appropriate code when body contains a right and left anatomical part of body and a service is performed on left anatomical part

Incorrect Use

• When procedure code description specifies bi-lateral or a side of body

Resources

• Active Local Coverage Determinations LCDs
  • Ankle Foot Orthoses (AFO)/Knee-Ankle-Foot Orthoses (KAFO), External Breast Prostheses (EBP), Eye Prostheses, Facial Prostheses, Knee Orthoses (KO), Lower Limb Prostheses (LLP), Orthopedic Footwear, Refractive Lenses, Surgical Dressings, Therapeutic Shoes for Persons with Diabetes (TSPD), Wheelchair Options and Accessories
• CMS Internet Only Manual (IOM), Medicare Claims Processing Manual, Publication 100-04, Chapter 23