It's not just S76.122D. That does not give the full story, plus if taking a patient for surgery it would not be the D character. It is at least A initial (active treatment). But that dx is not correct anyway. This is a complication or probably infection/osteomyelitis as suggested above. Was the wound closed or disrupted/non-healing? Would need to see the redacted op note, what did the provider list as the post-op dx? I would wait for path. Did they do intra-op path or cultures? It's probably going to end up being a T code such as T81.4___ or T81.3___ and then whatever the path states such as MSSA MRSA, streptococcus, etc. Possibly M86.1__
Additionally, if the patient was noncompliant following surgery and smoked, walked on the leg too soon, etc. or has comorbidities such as diabetes, CKD. Are there SDH that come into play, is the patient homeless, food access issues, problems obtaining medical care, language barrier, etc.? Of course, this would all have to be documented by the provider.
Think about it this way, does only using S76.122D tell the full story of why they did this case and the CPT that will be billed? No.