Coding and coverage · ICD-10-CM

K44 Diaphragmatic hernia

Not billable (header)Chapter 11

Report one of the more specific codes below.

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Codes under this one

  • K44.0 Diaphragmatic hernia with obstruction, without gangrene
  • K44.1 Diaphragmatic hernia with gangrene
  • K44.9 Diaphragmatic hernia without obstruction or gangrene

Instructional notes

Chapter 11

Excludes2Not included here: the patient may have both; report both when both are present.
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Section 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.

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • congenital diaphragmatic hernia (Q79.0)
  • congenital hiatus hernia (Q40.1)
Includes
  • hiatus hernia (esophageal) (sliding)
  • paraesophageal hernia

Chapter 11: Diseases of the digestive system · K40-K46 Hernia (K40-K46)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.