K40.31 Unilateral inguinal hernia, with obstruction, without gangrene, recurrent

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

Applies from K40 Inguinal hernia

Includes

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

Applies from K40.3 Unilateral inguinal hernia, with obstruction, without gangrene

Applicable to

• Inguinal hernia (unilateral) causing obstruction without gangrene
• Incarcerated inguinal hernia (unilateral) without gangrene
• Irreducible inguinal hernia (unilateral) without gangrene
• Strangulated inguinal hernia (unilateral) without gangrene

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 550.11 Inguinal hernia, with obstruction, without mention of gangrene, unilateral or unspecified,recurrent

Code annotations containing back-references to K40.31

Back-references to K40

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

Diagnosis Index entries for K40.31

• Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › with › obstruction › recurrent
• Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › unilateral › with › obstruction › recurrent

Nearby codes

• K40.2 Bilateral inguinal hernia, without obstruction or gangrene
• K40.20 Bilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
• 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 (this code)
• K40.4 Unilateral inguinal hernia, with gangrene
• K40.40 Unilateral inguinal hernia, with gangrene, not specified as recurrent
• 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