Ring corneal ulcer, bilateral

This code signifies a ring-shaped ulceration of the cornea affecting both eyes. This specific type of corneal ulcer is characterized by its annular appearance, often indicating a severe inflammatory or infectious process.

Apply this code when documentation explicitly states a "ring corneal ulcer" and specifies bilateral involvement. Supporting clinical notes should detail the characteristic ring-like morphology of the ulcer in both corneas, often accompanied by symptoms such as severe pain, photophobia, and vision impairment.

• Ensure documentation clearly specifies "ring" morphology and bilateral involvement; otherwise, a more general corneal ulcer code may be appropriate.
• Always code the underlying cause of the corneal ulcer if known and documented (e.g., infectious agent, autoimmune condition).
• Distinguish from other corneal ulcer types (e.g., central, marginal) which have different ICD-10-CM codes.