DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K42 Umbilical hernia

  • Header · not billable

K42 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Incarceration, incarceratedexomphalos → K42.0
  • Incarceration, incarceratedomphalocele → K42.0
  • Incarceration, incarceratedsarcoepiplomphalocele → K42.0

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K40-K46 Hernia (K40-K46)
  3. K42 Umbilical hernia
Billable codes
3
Subdivisions
3
CC / MCC codes
1 / 1
HCC V28 codes
0
New FY2027
0
Index entries
8

Codes in K42

  1. K42.0
    Umbilical hernia with obstruction, without gangrene
    BillableCC
    Inclusion terms 4

    Inclusion terms

    • Umbilical hernia causing obstruction, without gangrene
    • Incarcerated umbilical hernia, without gangrene
    • Irreducible umbilical hernia, without gangrene
    • Strangulated umbilical hernia, without gangrene
  2. K42.1
    Umbilical hernia with gangrene
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • Gangrenous umbilical hernia
  3. K42.9
    Umbilical hernia without obstruction or gangrene
    Billable
    Inclusion terms 1

    Inclusion terms

    • Umbilical hernia NOS

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At K42

Includes

  • paraumbilical hernia

Excludes1

  • omphalocele (Q79.2) Q79.2

Notes that also apply

Block K40-K46 instructions (Notes 1, Includes 3): printed on the block page.

Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.

Index entries

  • Incarceration, incarceratedexomphalos → K42.0
  • Incarceration, incarceratedomphalocele → K42.0
  • Incarceration, incarceratedsarcoepiplomphalocele → K42.0
  • Hernia, hernial (acquired) (recurrent)umbilicus, umbilical → K42.9
  • Incarceration, incarceratedexomphalosgangrenous → K42.1
  • Incarceration, incarceratedsarcoepiplomphalocelewith gangrene → K42.1
  • Hernia, hernial (acquired) (recurrent)umbilicus, umbilicalwithobstruction → K42.0
  • Hernia, hernial (acquired) (recurrent)umbilicus, umbilicalwithgangrene (and obstruction) → K42.1

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy