K40: Inguinal hernia

Codes under K40 (Inguinal hernia). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
K40.0	Bilateral inguinal hernia, with obstruction, without gangrene	—
K40.00	Bilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent	✓
K40.01	Bilateral inguinal hernia, with obstruction, without gangrene, recurrent	✓
K40.1	Bilateral inguinal hernia, with gangrene	—
K40.2	Bilateral inguinal hernia, without obstruction or gangrene	—
K40.3	Unilateral inguinal hernia, with obstruction, without gangrene	—
K40.4	Unilateral inguinal hernia, with gangrene	—
K40.9	Unilateral inguinal hernia, without obstruction or gangrene	—
K40.10	Bilateral inguinal hernia, with gangrene, not specified as recurrent	✓
K40.11	Bilateral inguinal hernia, with gangrene, recurrent	✓
K40.20	Bilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent	✓
K40.21	Bilateral inguinal hernia, without obstruction or gangrene, recurrent	✓
K40.30	Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent	✓
K40.31	Unilateral inguinal hernia, with obstruction, without gangrene, recurrent	✓
K40.40	Unilateral inguinal hernia, with gangrene, not specified as recurrent	✓
K40.41	Unilateral inguinal hernia, with gangrene, recurrent	✓
K40.90	Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent	✓
K40.91	Unilateral inguinal hernia, without obstruction or gangrene, recurrent	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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