ICD-10 Code K40.3 – Unilateral inguinal hernia, with obstruction, without gangrene (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K40.3 – Unilateral inguinal hernia, with obstruction, without gangrene
What it is
This code identifies a one-sided inguinal hernia in which abdominal contents are trapped or blocked, but there is no gangrene. Use it when the record clearly states obstruction without tissue death.
Clinical signs
Typical findings include a groin bulge, pain, tenderness, and reduced or absent reducibility. Clinical features vary; refer to documentation for evidence of obstruction and confirmation that gangrene is not present.
When to use this code
Use K40.3 when the provider documents a unilateral inguinal hernia with obstruction and specifically notes no gangrene. It also fits postoperative or emergency evaluations if the diagnosis is confirmed in the chart. If the side is not stated, check documentation before coding.
Do not use for
Do not use this code for an inguinal hernia without obstruction, or when gangrene is documented. If the hernia type is uncertain or documentation conflicts, check documentation.
Coding tip
Code only when obstruction is clearly documented and the hernia is unilateral; otherwise, verify laterality and complication status first.