Posterior scleritis, bilateral

This code signifies inflammation of the posterior sclera, the tough, white outer layer of the eye, affecting both eyes. Posterior scleritis can lead to significant vision impairment due to its proximity to the retina and optic nerve, often presenting with pain, redness, and visual disturbances.

Assign this code when documentation explicitly states a diagnosis of posterior scleritis affecting both eyes. This diagnosis is typically supported by ophthalmic examination findings such as choroidal folds, serous retinal detachment, or optic disc edema, confirmed by imaging like B-scan ultrasonography or OCT.

• Ensure the documentation clearly specifies "posterior" scleritis and "bilateral" involvement to support this specific code.
• Differentiate from anterior scleritis (H15.01-) and episcleritis (H15.1-), which involve different anatomical locations.
• Code any associated underlying systemic conditions, such as autoimmune diseases, as primary diagnoses when applicable.