I63.031
BillableCerebral infarction due to thrombosis of right carotid artery
HCC Category Mapping
V28HCC 249 — Ischemic or Unspecified Stroke
0.289V24HCC 100 — Ischemic or Unspecified Stroke
0.262ESRDHCC 100 — Ischemic or Unspecified Stroke
0.000What This Code Means
A stroke caused by a blood clot in the right carotid artery, a major blood vessel in the neck that supplies the brain.
Coding Tips
- •Ensure documentation clearly specifies 'right' carotid artery involvement
- •Carotid artery thrombosis is a common cause of stroke; verify imaging confirmation
Clinical Significance
Cerebral infarction due to thrombosis of the right carotid artery represents a major anterior circulation ischemic stroke. The carotid arteries are the primary blood supply to the cerebral hemispheres, and thrombosis of the right carotid can cause left-sided motor and sensory deficits, neglect syndrome, and other neurological impairments. This is among the most common and well-characterized stroke mechanisms, making it important for risk adjustment.
Documentation Requirements
- ✓Imaging confirmation of acute cerebral infarction in right carotid territory
- ✓Vascular imaging confirming right carotid artery thrombosis (CTA, MRA, duplex ultrasound)
- ✓Documentation explicitly identifying the right carotid artery
- ✓Neurological examination documenting left-sided deficits and other findings
- ✓National Institutes of Health Stroke Scale score
- ✓Treatment documentation including thrombolysis, thrombectomy, or carotid intervention decisions
Commonly Confused Codes
I63.032 — Thrombosis of left carotid artery; opposite lateralityI63.039 — Thrombosis of unspecified carotid artery; use only when laterality is unknownI63.131 — Embolism of right carotid artery; different mechanismI63.231 — Unspecified occlusion of right carotid artery; does not specify thrombosisI65.21 — Occlusion of right carotid artery without cerebral infarction; no stroke present
Code Hierarchy
└I63Cerebral infarction└I63.0Cerebral infarction due to thrombosis of precerebral arteries└I63.03Cerebral infarction due to thrombosis of carotid artery└I63.031Cerebral infarction due to thrombosis of right carotid artery
└I63.031Cerebral infarction due to thrombosis of right carotid artery