ICD-10 Code K40.30 – Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K40.30 – Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent
What it is
This code identifies a one-sided groin hernia that is blocked, but the trapped tissue has not lost blood supply. Use it when the hernia is documented as not recurrent and no gangrene is present.
Clinical signs
Typical findings include a groin bulge, pain, tenderness, and symptoms of bowel obstruction such as nausea, vomiting, or abdominal distension. Clinical features vary; refer to documentation.
When to use this code
Use K40.30 when the provider documents a unilateral inguinal hernia with obstruction and explicitly states there is no gangrene. It also applies when the record says the hernia is not recurrent, or does not indicate recurrence. Check documentation if laterality or obstruction status is unclear.
Do not use for
Do not use this code if gangrene is present, if the hernia is recurrent, or if the hernia is not obstructed. If the note does not support inguinal location or laterality, check documentation.
Coding tip
Confirm three elements in the note: unilateral side, obstruction, and absence of gangrene.