K55.03
⚠ Non-billable
Acute (reversible) ischemia of large intestine
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K55.03
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code K55.03?
ICD-10-CM code K55.03 represents Acute (reversible) ischemia of large intestine. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K55.03 billable?
No. K55.03 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is K55.03 in?
K55.03 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
Related codes in the K55 category
K55
Vascular disorders of intestine
Non-billable
K55.0
Acute vascular disorders of intestine
Non-billable
K55.1
Chronic vascular disorders of intestine
Billable
K55.2
Angiodysplasia of colon
Non-billable
K55.3
Necrotizing enterocolitis
Non-billable
K55.8
Other vascular disorders of intestine
Billable
K55.9
Vascular disorder of intestine, unspecified
Billable
K55.01
Acute (reversible) ischemia of small intestine
Non-billable
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