Hypertensive retinopathy, left eye

This code signifies damage to the blood vessels in the retina of the left eye caused by persistently high blood pressure. This damage can manifest as hemorrhages, exudates, cotton wool spots, or optic disc edema, directly attributable to the systemic hypertension.

Use this code when the physician's documentation explicitly links retinal changes in the left eye to the patient's hypertension. This diagnosis is typically made during an ophthalmoscopic examination, where the characteristic signs of hypertensive retinopathy are observed in the left fundus.

• Always code the underlying hypertension first, as it is the etiology of the retinopathy.
• Ensure documentation specifies "left eye" to support laterality; otherwise, an unspecified eye code may be necessary.
• Differentiate from diabetic retinopathy (E08-E13 with .3 codes) which presents with similar retinal findings but has a different etiology.