RC    Right coronary artery (Use with codes 92980–92982, 92995, and 92996.)
RP    Replacement and Repair
RT    Right side (used to identify procedures performed on the right side of the body)
SB    Service rendered by a nurse midwife
TA    Left foot, great toe
T1    Left foot, second digit
T2    Left foot, third digit
T3    Left foot, fourth digit
T4    Left foot, fifth digit
T5    Right foot, great toe
T6    Right foot, second digit
T7    Right foot, third digit
T8    Right foot, fourth digit
T9    Right foot, fifth digit

Modifier RT and LT Clarification:

• Modifiers RT and LT are informational modifiers only and should not be used when Modifier 50 applies.

• Modifier 50 should be used to report bilateral procedures that are performed on both sides at the same operative session as a single line item.


Modifier RT Right side


Instructions

Used to identify procedures performed on right side of body. Refer to Medicare Physician Fee Schedule database (MPFSDB) to determine if HCPCS modifier RT is applicable to a particular procedure code
Correct Use

    When body contains a right and left anatomical part of body and a service is performed on right anatomical part

Incorrect Use

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

Note: Modifier RT does not affect allowed amount on a claim; however, lack of modifier can cause denials or development to occur