ICD-10 Code E84.11 – Meconium ileus in cystic fibrosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E84.11 – Meconium ileus in cystic fibrosis
What it is
E84.11 identifies meconium ileus occurring in a patient with cystic fibrosis. Use it when the intestinal obstruction is part of the cystic fibrosis diagnosis, not a separate nonspecific bowel blockage.
Clinical signs
Typical findings include failure to pass meconium, abdominal distention, and signs of neonatal intestinal obstruction. Clinical features vary; refer to documentation for the confirmed relationship to cystic fibrosis.
When to use this code
Use this code when the record states meconium ileus is due to, or associated with, cystic fibrosis. It is appropriate for newborns or infants with documented CF and obstructive bowel findings. Code the condition as documented and verify the linkage in the chart.
Do not use for
Do not use E84.11 for meconium ileus without cystic fibrosis, or for other intestinal obstruction diagnoses. Check documentation if the provider does not clearly connect the ileus to CF.
Coding tip
Confirm both the cystic fibrosis diagnosis and the meconium ileus relationship before assigning E84.11.