Convert ICD-10-CM K40.00 to ICD-9-CM

ICD-10-CM K40.00 converts directly to:
  • 2015 ICD-9-CM 550.12 Inguinal hernia, with obstruction, without mention of gangrene, bilateral (not specified as recurrent)

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