I77.75
Dissection of other precerebral arteries
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 20 never code together
I77code
I77.75code
I00-I99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- transient cerebral ischemic attacks and related syndromes (G45.-)G45.-
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 1
I77.75code
Inclusion terms
- Dissection of basilar artery (trunk)
Index entries leading here 1
Alongside this code 8 same parent — I77.7
I77.70 Dissection of unspecified artery I77.71 Dissection of carotid artery I77.72 Dissection of iliac artery I77.73 Dissection of renal artery I77.74 Dissection of vertebral artery I77.76 Dissection of artery of upper extremity I77.77 Dissection of artery of lower extremity I77.79 Dissection of other specified artery
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.