Wiki diffference between 76 and 91 modifiers

[prem_ponnuru]

Hi All,

Can we use modifier 76 if a pathology laboratory service is repeated? can anybody explain me the difference between 76 and 91 modifiers.

Any help is greatly apreciated.

Prem, B.Pharm;CPC

 

[magnolia1]

Refer to Appendix A in your CPT book.
The difference between the two modifiers is explained very well there.

 

[dimmitta]

76 or 91 modifier

Basically a 76 modifier can be used for any repeat procedure or service. A 91 modifier is only used for repeat lab tests. I use the 91 modifier for any repeat lab tests that my doctors order on a medicare patient.

 

[magnolia1]

Keep in mind, Modifier 91 can only be used for repeat labs done
on the same day.