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Last Modified: 7/11/2024 Location: FL, PR, USVI Business: Part B

Anatomical modifiers

Anatomical modifiers include coronary artery, eye lid, finger, side of body, and toe.

Bilateral procedures

Procedures with a bilateral indicator of "1" must be reported with 1 unit of service and modifier 50. Modifier 50 identifies the service as being performed on both sides of the body. Do not report anatomical modifiers in addition to modifier 50.
If more than one bilateral procedure was performed, report the services on one line, the number of units should be adjusted to reflect the number of bilateral procedures performed.
It is recommended anatomical modifiers only be included when the service is performed unilaterally to show the additional services are not duplicates.

Coronary artery modifiers

Append one of the following modifiers to identify the coronary artery.

Modifier
Description
LC
Left circumflex coronary artery
LD
Left anterior descending coronary artery
LM
Left main coronary artery
RC
Right coronary artery
RI
Ramus intermedius

Eye lid modifiers

Append one of the following modifiers to identify the upper or lower eye lid.

Modifier
Description
E1
Upper left, eyelid
E2
Lower left, eyelid
E3
Upper right, eyelid
E4
Lower right, eyelid

Finger modifiers

Append one of the following modifiers to identify the digit of the hand.

Modifier
Description
FA
Left hand, thumb
F1
Left hand, second digit
F2
Left hand, third digit
F3
Left hand, fourth digit
F4
Left hand, fifth digit
F5
Right hand, thumb
F6
Right hand, second digit
F7
Right hand, third digit
F8
Right hand, fourth digit
F9
Right hand, fifth digit

Side of body modifiers

Use one of the anatomical specific modifiers to designate the area or part of the body which the procedure was performed.

Modifier
Description
LT
Left side (used to identify procedures performed on the left side of the body)
RT
Right side (used to identify procedures performed on the right side of the body)

Toe modifiers

Append one of the following modifiers to identify the digit of the foot.

Modifier
Description
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
Note: If the anatomical modifiers can't be described by using one of the above modifiers, reference Proper Use of Modifiers 59 &- X{EPSU} external pdf file

References

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