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ICD-10 I66 - Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
Chapter 9 Section I60-I69

I66

ICD-10 Not billable

Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction

Specifically for this code:
  • embolism of cerebral artery
  • narrowing of cerebral artery
  • obstruction (complete) (partial) of cerebral artery
  • thrombosis of cerebral artery
Specifically for this code:
  • Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5)
From Section I60-I69:
  • transient cerebral ischemic attacks and related syndromes (G45.-)
  • traumatic intracranial hemorrhage (S06.-)
From Chapter 9:
  • 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)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)
I66 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
I66.0
Occlusion and stenosis of middle cerebral artery
10
I66.1
Occlusion and stenosis of anterior cerebral artery
10
I66.2
Occlusion and stenosis of posterior cerebral artery
10
I66.3
Occlusion and stenosis of cerebellar arteries
Billable
10
I66.8
Occlusion and stenosis of other cerebral arteries
Billable
10
I66.9
Occlusion and stenosis of unspecified cerebral artery
Billable
      
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