ICD-10-CM 2027
ICD-10 code for peritoneal hematoma
From the official ICD-10-CM alphabetic index entry “Hematoma (traumatic) (skin surface intact) › peritoneal”. Page updated September 29, 2026.
About coding peritoneal hematoma
The ICD-10-CM code for peritoneal hematoma is K66.1 (Hemoperitoneum).
Within K66 (other disorders of peritoneum), K66.1 is specifically for Hemoperitoneum. Related codes cover peritoneal adhesions (postprocedural) (postinfection) (K66.0), other specified disorders of peritoneum (K66.8) and disorder of peritoneum, unspecified (K66.9).
Don't report K66.1 together with the conditions in its Excludes1 note: traumatic hemoperitoneum (S36.8-).
The conditions in its Excludes2 note aren't part of K66.1, but may be coded alongside it if the patient has both: retroperitoneal hematoma (K68.3) and retroperitoneal hemorrhage (K68.3).
Don't confuse with (Excludes1 for K66.1)
- traumatic hemoperitoneum (S36.8-)
Common questions about peritoneal hematoma ICD-10 codes
What is the ICD-10 code for peritoneal hematoma?
- K66.1 — Hemoperitoneum.
Is K66.1 billable?
- Yes. K66.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K66.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K66.1 as a principal diagnosis.
Is K66.1 a CC or MCC?
- K66.1 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.