Retrobulbar neuritis, right eye

This code signifies inflammation of the optic nerve located behind the eyeball in the right eye. This condition often leads to sudden vision loss, pain with eye movement, and changes in color perception. It can be an isolated event or a symptom of an underlying systemic disease.

Use this code when documentation explicitly states retrobulbar neuritis affecting the right eye. This diagnosis is typically supported by ophthalmological examination findings, such as optic disc edema or pallor, visual field defects, and patient-reported symptoms. It is often associated with conditions like multiple sclerosis.

• Differentiate from optic neuritis (H46.0-) which implies involvement of the optic nerve head, whereas retrobulbar neuritis specifically refers to the portion behind the globe.
• Ensure laterality is clearly documented; if left eye or bilateral, a different code is required.
• Look for documentation of the underlying cause, if known, and code it as a secondary diagnosis.