ICD-10-CM > K00-K95 > K40-K46 > K40 > K40.9 K40.9 Unilateral inguinal hernia, without obstruction or gangrene Non-Billable/Non-Specific Codes K40.90Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrentK40.91Unilateral inguinal hernia, without obstruction or gangrene, recurrent