Retained gallstone with abscess
Patient presented with RUQ abdominal pain. Had history of a Lap cholecystectomy 14 years ago. Found to have an abscess with what looked like a gallstone in the abdominal wall. An I&D of the abscess was performed with removal of the retained gallstone from subcutaneous tissue.
What would be the principal diagnosis; the retained gallstone (K91.86) or the abdominal wall abscess (L02.211)?