ICD-10 Code H18.012 – Anterior corneal pigmentations, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.012 – Anterior corneal pigmentations, left eye
What it is
This code identifies pigment deposits on the front surface of the cornea in the left eye. It is used when the record specifically documents anterior corneal pigmentation affecting that eye.
Clinical signs
Findings may include visible corneal pigmentation on slit-lamp examination and a documented left-eye location. Clinical features vary; refer to documentation.
When to use this code
Use H18.012 when the clinician documents anterior corneal pigmentations limited to the left eye. It is appropriate for ophthalmology notes, exam findings, or problem lists that clearly name the condition and laterality. Check documentation if the record does not specify the corneal layer or the eye involved.
Do not use for
Do not use this code for pigmentation in the right eye, both eyes, or unspecified eye. Avoid it when the note describes a different corneal disorder or only a nonspecific eye pigment finding.
Coding tip
Verify both the corneal location and laterality before assigning H18.012.