1. ICD-10-CM Codes
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2. K00-K95 Diseases of the digestive system
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3. K40-K46 Hernia
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4. K40- Inguinal hernia
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5. 2021 ICD-10-CM Diagnosis Code K40.31

2021 ICD-10-CM Diagnosis Code K40.31

Unilateral inguinal hernia, with obstruction, without gangrene, recurrent

2016 2017 2018 2019 2020 2021 Billable/Specific Code

• K40.31 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• Short description: Unilateral inguinal hernia, w obst, w/o gangrene, recurrent
• The 2021 edition of ICD-10-CM K40.31 became effective on October 1, 2020.
• This is the American ICD-10-CM version of K40.31 - other international versions of ICD-10 K40.31 may differ.

• Inguinal hernia unilateral recurrent with obstruction
• Inguinal hernia with obstruction recurrent
• Inguinal hernia, unilateral, recurrent, irreducible
• Intestinal obstruction due to recurrent inguinal hernia
• Left recurrent incarcerated inguinal hernia
• Left recurrent incarcerated inguinal hernia with obstruction
• Left recurrent inguinal hernia with obstruction
• Recurrent incarcerated inguinal hernia
• Recurrent irreducible inguinal hernia
• Recurrent irreducible inguinal hernia with obstruction
• Recurrent irreducible obstructed inguinal hernia
• Recurrent obstructed incarcerated inguinal hernia
• Right recurrent incarcerated inguinal hernia
• Right recurrent incarcerated inguinal hernia with obstruction
• Right recurrent inguinal hernia with obstruction
• Unilateral recurrent irreducible inguinal hernia

• 393 Other digestive system diagnoses with mcc
• 394 Other digestive system diagnoses with cc
• 395 Other digestive system diagnoses without cc/mcc

Convert K40.31 to ICD-9-CM

• 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

• Hernia, hernial (acquired) (recurrent) K46.9
  ICD-10-CM Diagnosis Code K46.9

  Unspecified abdominal hernia without obstruction or gangrene

  2016 2017 2018 2019 2020 2021 Billable/Specific Code

  Applicable To

  • Abdominal hernia NOS
  • inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) K40.90
    ICD-10-CM Diagnosis Code K40.90

    Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent

    2016 2017 2018 2019 2020 2021 Billable/Specific Code

    Applicable To

    • Inguinal hernia NOS
    • Unilateral inguinal hernia NOS
    • with
      • obstruction K40.30
        ICD-10-CM Diagnosis Code K40.30

        Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent

        2016 2017 2018 2019 2020 2021 Billable/Specific Code

        Applicable To

        • Inguinal hernia, with obstruction NOS
        • Unilateral inguinal hernia, with obstruction, without gangrene NOS
        • recurrent K40.31
    • unilateral K40.90
      ICD-10-CM Diagnosis Code K40.90

      Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent

      2016 2017 2018 2019 2020 2021 Billable/Specific Code

      Applicable To

      • Inguinal hernia NOS
      • Unilateral inguinal hernia NOS
      • with
        • obstruction K40.30
          ICD-10-CM Diagnosis Code K40.30

          Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent

          2016 2017 2018 2019 2020 2021 Billable/Specific Code

          Applicable To

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

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