I77.7
⚠ Non-billable (Header)Other arterial dissection
Diseases of the circulatory system (I00-I99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
directMay be coded together if both conditions coexist
- • dissection of aorta (I71.0-)
- • dissection of coronary artery (I25.42)
⚠️ Excludes2
inherited from I77Rules from parent category I77: Other disorders of arteries and arterioles
- • collagen (vascular) diseases (M30-M36)
- • hypersensitivity angiitis (M31.0)
- • pulmonary artery (I28.-)
Child Codes (9)
I77.70Dissection of unspecified arteryI77.71Dissection of carotid arteryI77.72Dissection of iliac arteryI77.73Dissection of renal arteryI77.74Dissection of vertebral arteryI77.75Dissection of other precerebral arteriesI77.76Dissection of artery of upper extremityI77.77Dissection of artery of lower extremityI77.79Dissection of other specified artery
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CodeI77.7
BillableNo — Header code
ParentI77
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes25 note(s)
Child codes9
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)