Disorders of visual pathways in (due to) neoplasm, unsp side

This code signifies a visual pathway disorder, such as optic neuropathy or chiasmal compression, that is directly caused by the presence of a neoplasm. The specific side affected by the disorder is not documented or is unknown. This diagnosis indicates a secondary effect of a tumor on the visual system.

Use this code when documentation clearly links a visual pathway disturbance to a neoplastic process, but the laterality of the visual impairment is not specified. This is appropriate for cases where imaging or clinical findings confirm a tumor impacting the optic nerves, chiasm, or tracts, and the resulting visual deficit is not localized to a single eye or side. Supporting documentation includes pathology reports, imaging studies (MRI, CT), and ophthalmological evaluations.

• Always sequence the neoplasm code (C00-D49) as the primary diagnosis, followed by this code.
• If the laterality (right, left, bilateral) of the visual pathway disorder is known, use a more specific code from the H47.52 series.
• Ensure the documentation explicitly states the visual pathway disorder is "due to" or "in" the neoplasm, rather than merely co-occurring.