K40.40 Unilateral inguinal hernia, with gangrene, not specified as recurrent

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applicable to

• Inguinal hernia with gangrene NOS
• Unilateral inguinal hernia with gangrene NOS

Applies from K40 Inguinal hernia

Includes

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

MS-DRG index

Defines the logic of DRG(s) 393-395 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 550.00 Inguinal hernia, with gangrene, unilateral or unspecified (not specified as recurrent)

Code annotations containing back-references to K40.40

Back-references to K40.4

• Type 1 Excludes: I96 Gangrene, not elsewhere classified ("gangrene in hernia (K40.1, K40.4, K41.1, K41.4, K42.1, K43.1-, K44.1, K45.1, K46.1)")

Back-references to K40

• Type 2 Excludes: K56.7 Ileus, unspecified ("intestinal obstruction with hernia (K40-K46)")

Diagnosis Index entries for K40.40

• Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › with › gangrene (and obstruction)
• Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › with › gangrene (and obstruction) › not specified as recurrent
• Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › unilateral › with › gangrene (and obstruction)
• Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › unilateral › with › gangrene (and obstruction) › not specified as recurrent

Nearby codes

• K40.21 Bilateral inguinal hernia, without obstruction or gangrene, recurrent
• K40.3 Unilateral inguinal hernia, with obstruction, without gangrene
• K40.30 Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent
• K40.31 Unilateral inguinal hernia, with obstruction, without gangrene, recurrent
• K40.4 Unilateral inguinal hernia, with gangrene
• K40.40 Unilateral inguinal hernia, with gangrene, not specified as recurrent (this code)
• K40.41 Unilateral inguinal hernia, with gangrene, recurrent
• K40.9 Unilateral inguinal hernia, without obstruction or gangrene
• K40.90 Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
• K40.91 Unilateral inguinal hernia, without obstruction or gangrene, recurrent