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  2. ICD-10-CM Codes List
  3. I00–I99
  4. I60-I69
  5. Cerebrovascular disorders in diseases classified elsewhere (I68)

Cerebrovascular disorders in diseases classified elsewhere (I68)

The ICD-10 code I68 covers cerebrovascular disorders that occur as complications in other diseases, rather than as primary conditions. These codes help specify when blood vessel problems in the brain are linked to systemic illnesses or other underlying causes.

The ICD-10 code I68.0 is used for cerebral amyloid angiopathy, a condition also known by terms like hereditary cerebrovascular amyloidosis or secondary systemic amyloidosis, where amyloid deposits affect brain vessels and increase stroke risk. Coders should note this include localized hereditary amyloidosis and familial non-neuropathic forms. I68.2 identifies cerebral arteritis when caused by other diseases, including infectious origins, emphasizing vascular inflammation within a broader illness. Lastly, I68.8 is for other specified cerebrovascular disorders linked to different diseases not detailed elsewhere. Using these codes accurately captures cerebrovascular complications arising in the context of systemic conditions, guiding proper diagnosis and patient management in clinical records and billing.

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Amyloid Neuropathies, Familial

Inherited disorders of the peripheral nervous system associated with the deposition of AMYLOID in nerve tissue. The different clinical types based on symptoms correspond to the presence of a variety of mutations in several different proteins including transthyretin (PREALBUMIN); APOLIPOPROTEIN A-I; and GELSOLIN.

Cerebral Amyloid Angiopathy

A heterogeneous group of sporadic or familial disorders characterized by AMYLOID deposits in the walls of small and medium sized blood vessels of CEREBRAL CORTEX and MENINGES. Clinical features include multiple, small lobar CEREBRAL HEMORRHAGE; cerebral ischemia (BRAIN ISCHEMIA); and CEREBRAL INFARCTION. Cerebral amyloid angiopathy is unrelated to generalized AMYLOIDOSIS. Amyloidogenic peptides in this condition are nearly always the same ones found in ALZHEIMER DISEASE. (from Kumar: Robbins and Cotran: Pathologic Basis of Disease, 7th ed., 2005)

Cerebral Amyloid Angiopathy, Familial

A familial disorder marked by AMYLOID deposits in the walls of small and medium sized blood vessels of CEREBRAL CORTEX and MENINGES.