K55.039

Acute (reversible) ischemia of large intestine, extent unspecified

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC ESRD V24

HCC107

Vascular Disease with Complications

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from K55.03Acute (reversible) ischemia of large intestine

Synonyms

Acute fulminant ischemic colitis Subacute ischemic colitis

Inherited from K55.0Acute vascular disorders of intestine

Synonyms

Infarction of appendices epiploicae Mesenteric (artery) (vein) embolism Mesenteric (artery) (vein) infarction Mesenteric (artery) (vein) thrombosis

Inherited from K55Vascular disorders of intestine

Excludes 1

necrotizing enterocolitis of newborn (P77.-)

Excludes 2

angioectasia (angiodysplasia) duodenum (K31.81-)

Inherited from chapter 11Diseases of the digestive system

Excludes 2

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)

Official Guidelines for K55.039

FY 2026 ›

I.C.11Chapter-specific guidanceChapter 11: Diseases of the Digestive System (K00-K95)

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