Infection fol a procedure, other surgical site, sequela

This code signifies a persistent or late-developing infection at a surgical site other than the primary incision, occurring as a long-term consequence of a previous procedure. It indicates that the acute phase of the infection has passed, but its effects or complications are still present.

Apply this code when documenting a chronic or residual infection, such as an abscess or osteomyelitis, that developed at a non-incisional surgical site (e.g., an organ, deep tissue, or implant location) following an operative procedure. This is appropriate when the patient is being treated for the ongoing effects of the infection, not the initial acute episode.

• Always sequence this code after the specific infection code (e.g., for osteomyelitis or abscess) to provide full clinical detail.
• Ensure documentation clearly states the infection is a sequela or late effect, not an acute, active infection.
• Verify the infection site is explicitly documented as "other surgical site" and not the primary incision, which would fall under a different T81.4 subcategory.