ICD-10 Code H47.41 – Disorders of optic chiasm in (due to) inflammatory disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.41 – Disorders of optic chiasm in (due to) inflammatory disorders
What it is
Use this code for an optic chiasm disorder caused by inflammation. It identifies pathology at the optic chiasm, where the optic nerves partially cross, rather than a general eye complaint.
Clinical signs
Clinical features vary; refer to documentation. Commonly, optic chiasm involvement may be associated with visual field defects, especially bitemporal loss, or other signs of chiasmal dysfunction noted on exam or imaging.
When to use this code
Assign H47.41 when the provider documents an inflammatory disorder affecting the optic chiasm, such as inflammatory chiasmopathy or chiasmal inflammation. Use it when the diagnosis is specific and supported by clinical or imaging findings. If the record only states visual disturbance without a chiasmal diagnosis, check documentation.
Do not use for
Do not use this code for optic neuritis, nonspecific visual loss, or other optic pathway disorders without chiasmal involvement. If the inflammation is elsewhere or the site is not documented, check documentation.
Coding tip
Code the inflammatory chiasmal diagnosis only when the record clearly links inflammation to the optic chiasm.