Injury of visual cortex, unspecified side, initial encounter

This code signifies damage to the visual cortex, the part of the brain responsible for processing visual information, without specifying whether the injury occurred on the left or right side. Such an injury can result in various visual field deficits, cortical blindness, or visual agnosia, depending on the extent and location of the damage.

Use this code when documentation indicates an injury to the visual cortex, but the laterality (left or right) is not specified by the provider. This is appropriate for the initial encounter for treatment of the acute injury. Supporting documentation would include physician notes detailing trauma to the occipital lobe affecting vision, without further laterality clarification.

• Ensure the documentation explicitly states "visual cortex" or "occipital lobe affecting vision" to support this code.
• If laterality (left or right) is specified, use the more specific codes S04.041A or S04.042A.
• Remember the "A" suffix indicates an initial encounter for active treatment of the injury.