Emergency: 119
AMDA-IMIC

K40 Inguinal hernia

Category / Non-billable header 18 subcodes

Block: Hernia (K40-K46)

Includes

  • bubonocele
  • direct inguinal hernia
  • double inguinal hernia
  • indirect inguinal hernia
  • inguinal hernia NOS
  • oblique inguinal hernia
  • scrotal hernia

Subcodes

Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.

Code Description Billable
K40..0 Bilateral inguinal hernia, with obstruction, without gangrene No
K40..00 Bilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent Yes
K40..01 Bilateral inguinal hernia, with obstruction, without gangrene, recurrent Yes
K40..1 Bilateral inguinal hernia, with gangrene No
K40..10 Bilateral inguinal hernia, with gangrene, not specified as recurrent Yes
K40..11 Bilateral inguinal hernia, with gangrene, recurrent Yes
K40..2 Bilateral inguinal hernia, without obstruction or gangrene No
K40..20 Bilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent Yes
K40..21 Bilateral inguinal hernia, without obstruction or gangrene, recurrent Yes
K40..3 Unilateral inguinal hernia, with obstruction, without gangrene No
K40..30 Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent Yes
K40..31 Unilateral inguinal hernia, with obstruction, without gangrene, recurrent Yes
K40..4 Unilateral inguinal hernia, with gangrene No
K40..40 Unilateral inguinal hernia, with gangrene, not specified as recurrent Yes
K40..41 Unilateral inguinal hernia, with gangrene, recurrent Yes
K40..9 Unilateral inguinal hernia, without obstruction or gangrene No
K40..90 Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent Yes
K40..91 Unilateral inguinal hernia, without obstruction or gangrene, recurrent Yes

Plain-language term for this code

The following entry in the US Medical Glossary corresponds to ICD-10-CM category K40:

Last reviewed: September 2026