RT
Right side
- Applicable to
- hcpcs
Overview
Modifier RT identifies a procedure or item furnished to the right side of the body. The right-side counterpart to LT. RT is most commonly used with anatomically-specific HCPCS codes — orthotics, prosthetics, and certain DME — to designate the affected limb or organ side.
When to use
- The procedure or item is anatomically right-sided.
- The HCPCS code does not specify laterality in its description.
- Required by the payer policy for the specific code.
Common mistakes
- Using RT for midline procedures.
- Omitting RT/LT on orthotic codes — denials are common when laterality is not explicit.
Examples
- L1832-RT — Knee orthosis for the right knee.