LTHCPCS Level II
Left side (used to identify procedures performed on the left side of the body)
- Usage notes
- Append to procedure codes to identify a service performed on the left side of a paired organ or structure (e.g., left knee, left kidney).
- Common mistakes
- Omitting LT/RT on a bilateral-eligible code when only one side was actually treated, which can cause the payer to assume a bilateral service and adjust payment incorrectly.
Related modifiers
L1Provider attestation that the hospital laboratory test(s) is not packaged underLCLeft circumflex coronary arteryLDLeft anterior descending coronary arteryLLLease/rental (use the 'll' modifier when dme equipment rental is to be appliedLMLeft main coronary arteryLRLaboratory round tripLSFda-monitored intraocular lens implantLUFractionated payment
Frequently asked questions
What does modifier LT mean?
Left side (used to identify procedures performed on the left side of the body)
When do I use modifier LT?
Append to procedure codes to identify a service performed on the left side of a paired organ or structure (e.g., left knee, left kidney).
What's a common mistake with modifier LT?
Omitting LT/RT on a bilateral-eligible code when only one side was actually treated, which can cause the payer to assume a bilateral service and adjust payment incorrectly.
HCPCS modifier data from CMS. CPT® is a registered trademark of the American Medical Association — CPT modifier descriptions are not included on this site. Always verify codes with authoritative sources before making billing decisions.