Wiki posting add-on code without primary

[bjmon83]

Inpatient has procedure 22558, arthodesis done on 9/6. Then on 9/9 patient has add-on code 22840, non-segmental instrumentation done by same physician. How would you code the add-on code without the primary? Insurance denies it when add on only is charged for that day.

 

[nyyankees]

Inpatient has procedure 22558, arthodesis done on 9/6. Then on 9/9 patient has add-on code 22840, non-segmental instrumentation done by same physician. How would you code the add-on code without the primary? Insurance denies it when add on only is charged for that day.

you can't....maybe unlisted??

 

[jdemar]

I agreee w nyyankess, you can't that's why they are called + add on.