Acute peptic ulcer, site unspecified, with perforation

This code signifies a rapidly developing ulceration in the lining of the stomach or duodenum, where the specific location of the ulcer is not documented. A critical feature is the presence of a full-thickness defect in the gastrointestinal wall, allowing contents to leak into the abdominal cavity. This represents a severe, life-threatening complication requiring immediate medical intervention.

Assign this code when documentation clearly indicates an acute peptic ulcer with perforation, but the physician does not specify if the ulcer is gastric, duodenal, or in another peptic site. This typically occurs in emergency settings where the focus is on stabilizing the patient rather than precise anatomical localization. Supporting documentation includes operative reports detailing perforation repair, endoscopy reports, or imaging studies confirming perforation in the context of acute ulcer symptoms.

• Do not use this code if the site of the acute peptic ulcer (e.g., gastric, duodenal) is specified; instead, select a more specific K27 subcategory.
• Always sequence this code as a principal diagnosis when the perforation is the reason for admission and treatment.
• Ensure documentation explicitly states "acute" and "perforation" to support this code; chronic ulcers with perforation or acute ulcers without perforation require different codes.