All ICD10 Codes
K66.1BillableMCCNo HCC

Hemoperitoneum

Diseases of the Digestive System·Other disorders of peritoneum·subcategory·FY 2027

Peritoneal Disorders: Your peritoneum is the tissue that lines your abdominal wall and covers most of the organs in your abdomen. A liquid, peritoneal fluid, lubricates the surface of this tissue.

Read more about peritoneal disorders on MedlinePlus · Source: MedlinePlus, National Library of Medicine

Also indexed as: Hematoma, peritoneal; Hemoperitoneum; Hemorrhage, intrapelvic, male; Hemorrhage, intraperitoneal; Hemorrhage, mesentery; Hemorrhage, omentum; Hemorrhage, peritoneum, peritoneal

Instructional notes

Includes: conditions that are coded here

  • Peritoneal hematoma
  • Peritoneal hemorrhage

Excludes1: not coded here, use a different code

  • traumatic hemoperitoneum (S36.8-)

Excludes2: not included here, code separately if applicable

  • retroperitoneal hematoma (K68.3)
  • retroperitoneal hemorrhage (K68.3)

Also applies, from K66: Other disorders of peritoneum

These notes sit on K66 and apply to every code under it, including K66.1.

Excludes2: not included here, code separately if applicable

  • ascites (R18.-)
  • peritoneal effusion (chronic) (R18.8)

Where K66.1 sits

MS-DRGs

As the principal diagnosis, this code groups to these MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

ICD-9-CM equivalent

Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).

  • 568.81 Hemoperitoneum (nontraumatic)
ICD-9 to ICD-10 converter