Other optic atrophy, left eye

This code signifies the degeneration of the optic nerve in the left eye due to causes other than glaucoma, hereditary conditions, or primary central nervous system disorders. It indicates a loss of nerve fibers that transmit visual information from the retina to the brain, leading to impaired vision.

Apply this code when documentation specifies optic atrophy affecting the left eye, and the etiology is not clearly defined as glaucomatous, hereditary, or related to a specific CNS disease. This diagnosis is typically supported by ophthalmoscopic findings, visual field defects, and potentially imaging studies.

• Ensure the documentation explicitly states "left eye" to support the laterality.
• Distinguish this from H47.20 (unspecified optic atrophy) or H47.291 (right eye) based on laterality.
• Always code the underlying cause of the optic atrophy if known and documented (e.g., vascular occlusion, trauma, inflammation).