Modifier LT and RT

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Hello,

Do payers have guidelines for the providers to bill modifier LT or RT for procedures that are unilateral?

LT and RT nor 50 should be required when the procedure is inherently bilateral. But what happens when the procedure is performed unilateral. Does it require the anatomic modifier.

Thanks,

Rudolph

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Rudolph Dmello, PT, MIAP, CPC, COC, PAHM

Modifier LT and RT