Other disorders of peritoneum
Diseases of the Digestive System·Diseases of peritoneum, retroperitoneum and pelvis (K65-K6A)·category·FY 2027
4 billable codes under K66: 1 is an MCC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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
Instructional notes
All codes under K66
K66 can't be used on a claim. Pick a billable code below; grey headings group them.
MS-DRGs
As the principal diagnosis, the billable codes under K66 group 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.
- DRG 393 Other Digestive System Diagnoses with MCC (4 of 4 codes)
- DRG 394 Other Digestive System Diagnoses with CC (4 of 4 codes)
- DRG 395 Other Digestive System Diagnoses without CC/MCC (4 of 4 codes)
- DRG 791 Prematurity with Major Problems (1 of 4 codes)
- DRG 793 Full Term Neonate with Major Problems (1 of 4 codes)