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ICD-10 Guide
ICD-10 CodesK26.1

K26.1

Billable

Acute duodenal ulcer with perforation

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 K26.1 is a billable code used to indicate a diagnosis of acute duodenal ulcer with perforation.

Key Diagnostic Point:

Acute duodenal ulcer with perforation is a serious gastrointestinal condition characterized by a breach in the wall of the duodenum, leading to the leakage of intestinal contents into the abdominal cavity. Clinically, patients may present with sudden onset of severe abdominal pain, often described as sharp or stabbing, along with signs of peritonitis such as rigidity, rebound tenderness, and guarding. The anatomy involved includes the duodenum, which is the first part of the small intestine, and its surrounding structures, including the pancreas and liver. Disease progression can be rapid, with perforation leading to peritonitis, sepsis, and potentially life-threatening complications if not treated promptly. Diagnostic considerations include imaging studies such as abdominal X-rays or CT scans to confirm perforation, along with laboratory tests to assess for infection and electrolyte imbalances. Early diagnosis and intervention are critical to prevent morbidity and mortality associated with this condition.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Diagnostic complexity
  • Treatment complexity
  • Documentation requirements
  • Coding specificity

Audit Risk Factors

  • Common coding errors include misclassification of ulcer type and failure to document perforation.
  • Documentation gaps may arise from incomplete clinical notes regarding the patient's presentation and treatment.
  • Billing challenges often involve denials related to insufficient documentation of the acute nature and complications of the ulcer.

Specialty Focus

Medical Specialties

Gastroenterology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

General Surgery

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical significance of K26.1 lies in its potential for severe complications, including peritonitis and sepsis, which can lead to increased healthcare utilization and hospital admissions. The population health impact is notable, as duodenal ulcers are prevalent in certain demographics, particularly those with a history of NSAID use or H. pylori infection. Quality measures focus on timely diagnosis and treatment to reduce morbidity and mortality associated with this condition.

ICD-9 vs ICD-10

The clinical significance of K26.1 lies in its potential for severe complications, including peritonitis and sepsis, which can lead to increased healthcare utilization and hospital admissions. The population health impact is notable, as duodenal ulcers are prevalent in certain demographics, particularly those with a history of NSAID use or H. pylori infection. Quality measures focus on timely diagnosis and treatment to reduce morbidity and mortality associated with this condition.

Reimbursement & Billing Impact

Reimbursement considerations include the need for surgical intervention, which may involve higher reimbursement rates. Common denials can occur if documentation does not clearly support the diagnosis of perforation or if the procedure performed is not adequately justified. Best practices include ensuring that all clinical notes are complete and that the coding accurately reflects the severity of the condition.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for K00-K99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for K00-K99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by K26.1?

K26.1 specifically covers acute duodenal ulcers that have resulted in perforation. This includes cases where the ulcer has breached the duodenal wall, leading to peritonitis or other complications.

When should K26.1 be used instead of related codes?

K26.1 should be used when there is clear documentation of perforation associated with an acute duodenal ulcer. If there is no perforation, K26.0 should be used instead.

What documentation supports K26.1?

Documentation should include clinical notes detailing the patient's symptoms, imaging results confirming perforation, surgical reports if applicable, and any laboratory findings that support the diagnosis of an acute duodenal ulcer with perforation.