DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K44 Diaphragmatic hernia

  • Header · not billable

K44 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Hernia, hernial (acquired) (recurrent)diaphragm, diaphragmatic → K44.9
  • Hernia, hernial (acquired) (recurrent)hiatal (esophageal) (sliding) → K44.9
  • Hernia, hernial (acquired) (recurrent)diaphragm, diaphragmaticwithobstruction → K44.0

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K40-K46 Hernia (K40-K46)
  3. K44 Diaphragmatic hernia
Billable codes
3
Subdivisions
3
CC / MCC codes
1 / 1
HCC V28 codes
0
New FY2027
0
Index entries
6

Codes in K44

  1. K44.0
    Diaphragmatic hernia with obstruction, without gangrene
    BillableCC
    Inclusion terms 4

    Inclusion terms

    • Diaphragmatic hernia causing obstruction
    • Incarcerated diaphragmatic hernia
    • Irreducible diaphragmatic hernia
    • Strangulated diaphragmatic hernia
  2. K44.1
    Diaphragmatic hernia with gangrene
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • Gangrenous diaphragmatic hernia
  3. K44.9
    Diaphragmatic hernia without obstruction or gangrene
    Billable
    Inclusion terms 1

    Inclusion terms

    • Diaphragmatic 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 K44

Includes

  • hiatus hernia (esophageal) (sliding)
  • paraesophageal hernia

Excludes1

  • congenital diaphragmatic hernia (Q79.0) Q79.0
  • congenital hiatus hernia (Q40.1) Q40.1

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

  • Hernia, hernial (acquired) (recurrent)diaphragm, diaphragmatic → K44.9
  • Hernia, hernial (acquired) (recurrent)hiatal (esophageal) (sliding) → K44.9
  • Hernia, hernial (acquired) (recurrent)diaphragm, diaphragmaticwithobstruction → K44.0
  • Hernia, hernial (acquired) (recurrent)hiatal (esophageal) (sliding)withobstruction → K44.0
  • Hernia, hernial (acquired) (recurrent)diaphragm, diaphragmaticwithgangrene (and obstruction) → K44.1
  • Hernia, hernial (acquired) (recurrent)hiatal (esophageal) (sliding)withgangrene (and obstruction) → K44.1

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

Hierarchy