K42 Umbilical hernia

Category / Non-billable header 3 subcodes

Block: Hernia (K40-K46)

Includes

  • paraumbilical hernia

Excludes 1 (cannot be coded together)

  • omphalocele (Q79.2)

Subcodes

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

Code Description Billable
K42..0 Umbilical hernia with obstruction, without gangrene Yes
K42..1 Umbilical hernia with gangrene Yes
K42..9 Umbilical hernia without obstruction or gangrene Yes

Last reviewed: September 2026