K40.40 Unilateral inguinal hernia, with gangrene, not specified as recurrent

✓ Billable ICD-10-CM 2026
Open K40.40 in Web App →

The ICD-10-CM code for Unilateral inguinal hernia, with gangrene, not specified as recurrent is K40.40 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
K40-K46: Hernia (K40-K46)
Category K40
19 codes (12 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to K40.40:

  • Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › with › gangrene (and obstruction)
  • Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › unilateral › with › gangrene (and obstruction)
  • Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › with › gangrene (and obstruction) › not specified as recurrent
  • Hernia, hernial (acquired) (recurrent) › inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding) › unilateral › with › gangrene (and obstruction) › not specified as recurrent

Inclusion Terms

  • Inguinal hernia with gangrene NOS
  • Unilateral inguinal hernia with gangrene NOS

U.S. Hospital Utilization

  • An estimated 660 U.S. inpatient stays in 2023 included K40.40 among the documented diagnoses.
  • 435 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Chapter 11 reserved for future expansion

11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.11

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

K40 Inguinal hernia

Related Codes in K40

K40 Inguinal hernia K40.0 Bilateral inguinal hernia, with obstruction, without gangrene K40.00 Bilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent K40.01 Bilateral inguinal hernia, with obstruction, without gangrene, recurrent K40.1 Bilateral inguinal hernia, with gangrene K40.10 Bilateral inguinal hernia, with gangrene, not specified as recurrent K40.11 Bilateral inguinal hernia, with gangrene, recurrent K40.2 Bilateral inguinal hernia, without obstruction or gangrene K40.20 Bilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent K40.21 Bilateral inguinal hernia, without obstruction or gangrene, recurrent K40.3 Unilateral inguinal hernia, with obstruction, without gangrene K40.30 Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent K40.31 Unilateral inguinal hernia, with obstruction, without gangrene, recurrent K40.4 Unilateral inguinal hernia, with gangrene K40.41 Unilateral inguinal hernia, with gangrene, recurrent K40.9 Unilateral inguinal hernia, without obstruction or gangrene K40.90 Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent K40.91 Unilateral inguinal hernia, without obstruction or gangrene, recurrent
Search all 70,000+ ICD-10-CM codes →
Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

Get HCC Mappings, Clinical Summaries, and More

Access premium features including HCC risk adjustment, FDA drug indications, AI coding assistant, and comprehensive clinical context.

Start Free Trial