Posterior corneal pigmentations, unspecified eye

This code describes the presence of pigment deposits on the posterior surface of the cornea, without specifying which eye is affected. These pigmentations can be a normal finding, such as Krukenberg's spindle, or indicative of underlying ocular conditions like pigment dispersion syndrome or glaucoma.

Use this code when documentation indicates posterior corneal pigmentations are present but the specific eye (right or left) is not recorded. This code is appropriate when the clinician notes "posterior corneal pigmentations, unspecified eye" or similar phrasing lacking laterality. Ensure the medical record clearly states the presence of these pigmentations.

• Avoid using this code if laterality (right or left eye) is documented; instead, choose the more specific H18.051 or H18.052.
• Do not confuse with anterior corneal pigmentations (H18.04-).
• Code any underlying conditions, such as pigment dispersion syndrome (H21.26-), in addition to this code.