Wiki MOHs Surgery Complex Closure Add-On Code(s)

nicoleysmith

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My clinic has just added a MOHs surgeon and I have a question about the add-on codes for a complex repair. This is the pertinent info from the surgery note:

Basal Cell Carcinoma, location: left forehead, MOHs 1 stage, 1 block; post-op length 3.2 cm, complex repair performed.

Basal Cell Carcinoma, location: left infraorbital, MOHS 1 stage, 1 block; post-op length 4.9 cm, complex repair performed.

I coded the following:
17311
17311-59
13132
13133

Thanks to the kind people on this forum, I know to add the same type of repair in the same region together: 3.2 cm + 4.9 cm = 8.1 cm.
13132 is up to 7.5 cm + 13133 is an additional 0.5 cm = 8.0 cm

Can I add 13133 again to cover the last 0.1 cm? Or do we round down?

Any help would be greatly appreciated. Please and thank you!
 
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