K40.31 – Unilateral inguinal hernia, with obstruction, without gangrene, recurrent
ICD-10-CM 2027 diagnosis code · Hernia
ICD-10-CM code
K40.31
- Code
K40.31(claims format:K4031)- Description
- Unilateral inguinal hernia, with obstruction, without gangrene, recurrent
- Short description
- Unilateral inguinal hernia, w obst, w/o gangrene, recurrent
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K40-K46 Hernia
- Parent codes
- K40 › K40.3
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
K40 – Inguinal hernia
Includes:
- bubonocele
- direct inguinal hernia
- double inguinal hernia
- indirect inguinal hernia
- inguinal hernia NOS
- oblique inguinal hernia
- scrotal hernia
K40.3 – Unilateral inguinal hernia, with obstruction, without gangrene
Applicable to:
- Inguinal hernia (unilateral) causing obstruction without gangrene
- Incarcerated inguinal hernia (unilateral) without gangrene
- Irreducible inguinal hernia (unilateral) without gangrene
- Strangulated inguinal hernia (unilateral) without gangrene
Block K40-K46
Includes:
- acquired hernia
- congenital [except diaphragmatic or hiatus] hernia
- recurrent hernia
Notes:
- Hernia with both gangrene and obstruction is classified to hernia with gangrene.
Index terms for K40.31
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in K40.3
Frequently asked questions
What is ICD-10 code K40.31?
K40.31 is the ICD-10-CM code for unilateral inguinal hernia, with obstruction, without gangrene, recurrent, in the block K40-K46 (Hernia).
Is K40.31 a billable code?
Yes. K40.31 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does K40.31 belong to?
It belongs to category K40 – Inguinal hernia.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.