Yeah, these work well (assuming flexible or semi-flexible). I only do them for tuft of digit ulcers, pre-ulcer callus, or significant pain on the tuft of the toe. A lot of patients come to a follow appt asking if I can do all lesser toes bilateral (no, unless they have bona fide tuft pain or callus and they fail accommodative insoles). With proper selection, I think I'm over 90% on having the office release work well enough to not need OR. Rigid contractures are obvious, but you have to realize when the HAV or cavus or whatever is going to crash your results and they are just better as OR cases.
I usually do plantar PIPJ with 18ga and try to get both tendons and the capsule (28232 since I visualize the tendon and bandage it, etc), try to miss the digit arteries, bandage with Kling and 1" coban in max dorsiflex for a few days with surgical shoe, then alcohol clean + band aid qd prn by pt and no soak... f/u 1-2wks. I figure they scar down but in a lengthened position (similar to plantar fasciotomy, TAL, etc).
I don't bill for any skin plasty or capsulotomy on any of the office stuff... those are OR codes in my estimation. I do that occasionally for OR hammertoe repairs of sublux 2nd PIPJ, etc (bill 28308, 28285, 28270). I don't add the the EHL tendon Z-lengthen code (I just consider that part of the 28270). If anyone tells you the 28285 includes the 28270, that is wrong, though... that is plain as day in AAOS and AOFAS coding handbooks that hammertoe is PIPJ and capsulotomy is MPJ (if done separately).
This fits in a jobs thread since all jobs need this... unless you're straight salary, then you board a 4th digit tendonectomy for OR, send the pt for H&P clearance, and block off 2hrs of that morning (make it the whole morning!) and don't even bother coding it since it doesn't matter?