Convert ICD-10-CM K40.91 to ICD-9-CM

ICD-10-CM K40.91 converts directly to:
  • 2015 ICD-9-CM 550.91 Inguinal hernia, without mention of obstruction or gangrene, unilateral or unspecified, recurrent

Source: 2020 ICD-10-CM CMS General Equivalence Mappings.