I00–I99: Diseases of the Circulatory System
Chapter 9 of ICD-10-CM 2027, 1,807 codes in 10 blocks.
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Chapter instructions
Excludes2: not included here, code separately if applicable
- 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.-)
Codes in this chapter
All codesBillable only1,807 results
- I66.29Occlusion and stenosis of unspecified posterior cerebral artery
- I66.3Occlusion and stenosis of cerebellar arteries
- I66.8Occlusion and stenosis of other cerebral arteries
- I66.9Occlusion and stenosis of unspecified cerebral artery
- I67Other cerebrovascular diseases
- I67.0Dissection of cerebral arteries, nonruptured
- I67.1Cerebral aneurysm, nonruptured
- I67.2Cerebral atherosclerosis
- I67.3Progressive vascular leukoencephalopathy
- I67.4Hypertensive encephalopathy
- I67.5Moyamoya disease
- I67.6Nonpyogenic thrombosis of intracranial venous system
- I67.7Cerebral arteritis, not elsewhere classified
- I67.8Other specified cerebrovascular diseases
- I67.81Acute cerebrovascular insufficiency
- I67.82Cerebral ischemia
- I67.83Posterior reversible encephalopathy syndrome
- I67.84Cerebral vasospasm and vasoconstriction
- I67.841Reversible cerebrovascular vasoconstriction syndrome
- I67.848Other cerebrovascular vasospasm and vasoconstriction
- I67.85Hereditary cerebrovascular diseases
- I67.850Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
- I67.858Other hereditary cerebrovascular disease
- I67.89Other cerebrovascular disease
- I67.9Cerebrovascular disease, unspecified
- I68Cerebrovascular disorders in diseases classified elsewhere
- I68.0Cerebral amyloid angiopathy
- I68.2Cerebral arteritis in other diseases classified elsewhere
- I68.8Other cerebrovascular disorders in diseases classified elsewhere
- I69Sequelae of cerebrovascular disease
- I69.0Sequelae of nontraumatic subarachnoid hemorrhage
- I69.00Unspecified sequelae of nontraumatic subarachnoid hemorrhage
- I69.01Cognitive deficits following nontraumatic subarachnoid hemorrhage
- I69.010Attention and concentration deficit following nontraumatic subarachnoid hemorrhage
- I69.011Memory deficit following nontraumatic subarachnoid hemorrhage
- I69.012Visuospatial deficit and spatial neglect following nontraumatic subarachnoid hemorrhage
- I69.013Psychomotor deficit following nontraumatic subarachnoid hemorrhage
- I69.014Frontal lobe and executive function deficit following nontraumatic subarachnoid hemorrhage
- I69.015Cognitive social or emotional deficit following nontraumatic subarachnoid hemorrhage
- I69.018Other symptoms and signs involving cognitive functions following nontraumatic subarachnoid hemorrhage
- I69.019Unspecified symptoms and signs involving cognitive functions following nontraumatic subarachnoid hemorrhage
- I69.02Speech and language deficits following nontraumatic subarachnoid hemorrhage
- I69.020Aphasia following nontraumatic subarachnoid hemorrhage
- I69.021Dysphasia following nontraumatic subarachnoid hemorrhage
- I69.022Dysarthria following nontraumatic subarachnoid hemorrhage
- I69.023Fluency disorder following nontraumatic subarachnoid hemorrhage
- I69.028Other speech and language deficits following nontraumatic subarachnoid hemorrhage
- I69.03Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage
- I69.031Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting right dominant side
- I69.032Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting left dominant side