ICD-10 Code H47.149 – Foster-Kennedy syndrome, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.149 – Foster-Kennedy syndrome, unspecified eye
What it is
H47.149 identifies Foster-Kennedy syndrome affecting an unspecified eye. It is used when documentation describes this optic nerve syndrome but does not specify which eye is involved.
Clinical signs
Typical findings include optic atrophy in one eye, papilledema in the other, and reduced vision or visual field loss. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record specifically states Foster-Kennedy syndrome and laterality is not documented. It may also apply when the note confirms the syndrome but does not identify the affected eye. Do not assume laterality from exam findings alone.
Do not use for
Do not use this code for isolated optic atrophy, papilledema, or other optic nerve disorders without Foster-Kennedy syndrome. If the eye is specified, choose the laterality-specific code instead.
Coding tip
Check the ophthalmology note for laterality and document the syndrome exactly as stated before assigning H47.149.