2021 ICD-10-CM Diagnosis Code K40

Inguinal hernia

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • K40 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM K40 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of K40 - other international versions of ICD-10 K40 may differ.
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • bubonocele
  • direct inguinal hernia
  • double inguinal hernia
  • indirect inguinal hernia
  • inguinal hernia NOS
  • oblique inguinal hernia
  • scrotal hernia
The following code(s) above K40 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K40:
  • K00-K95
    2021 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
  • K40-K46
    2021 ICD-10-CM Range K40-K46

    Hernia

    Includes
    • acquired hernia
    • congenital [except diaphragmatic or hiatus] hernia
    • recurrent hernia
    Note
    • Hernia with both gangrene and obstruction is classified to hernia with gangrene.
    Hernia
Clinical Information
  • An abdominal hernia with an external bulge in the groin region. It can be classified by the location of herniation. Indirect inguinal hernias occur through the internal inguinal ring. Direct inguinal hernias occur through defects in the abdominal wall (transversalis fascia) in hesselbach's triangle. The former type is commonly seen in children and young adults; the latter in adults.
  • The protrusion of a sac-like structure containing fibroadipose tissue through an abnormal opening in the inguinal region.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To K40
K35.891 …… without perforation, with gangrene
K36 Other appendicitis
K37 Unspecified appendicitis
K38 Other diseases of appendix
K38.0 Hyperplasia of appendix
K38.1 Appendicular concretions
K38.2 Diverticulum of appendix
K38.3 Fistula of appendix
K38.8 Other specified diseases of appendix
K38.9 Disease of appendix, unspecified
K40 Inguinal hernia
K40.0 Bilateral inguinal hernia, with obstruction, without gangrene
K40.00 …… not specified as recurrent
K40.01 …… recurrent
K40.1 Bilateral inguinal hernia, with gangrene
K40.10 …… not specified as recurrent
K40.11 …… recurrent
K40.2 Bilateral inguinal hernia, without obstruction or gangrene
K40.20 …… not specified as recurrent
K40.21 …… recurrent
K40.3 Unilateral inguinal hernia, with obstruction, without gangrene

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.