Transmetatarsal

“On February 11, a patient has a transmetatarsal amputation. The patient is a non-compliant, diabetic. The site deteriorates weeks after he leaves the hospital. On March 24, he was readmitted for an infected at the amputation site. On March 26, the remaining 5 metatarsals stumps are removed, and the wound is kept open. How would you recommend coding for the 2nd surgery? What is the code for removing the 5 remaining metatarsal stumps?”