ICD-10 Code K44.9 – Diaphragmatic hernia without obstruction or gangrene (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K44.9 – Diaphragmatic hernia without obstruction or gangrene
What it is
K44.9 identifies a diaphragmatic hernia when abdominal contents protrude through the diaphragm, but there is no obstruction or gangrene. Use it when the record documents a diaphragmatic or hiatal hernia without acute complication.
Clinical signs
Common findings include reflux, chest discomfort, epigastric pain, or a known hernia seen on imaging or endoscopy. Clinical features vary; refer to documentation.
When to use this code
Use K44.9 when the provider documents a diaphragmatic hernia and does not specify obstruction, gangrene, or another more detailed type. It may also fit incidental findings with no acute complication. If the note names a different hernia subtype, code that documented diagnosis instead.
Do not use for
Do not use K44.9 for hernias with obstruction or gangrene, or when the record clearly identifies a different diaphragmatic hernia category. Check documentation.
Coding tip
Look for the exact hernia wording and any mention of complication before assigning K44.9.