ICD-10 Code H16.11 – Macular keratitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.11 – Macular keratitis
What it is
H16.11 identifies macular keratitis, an inflammatory condition of the cornea. Use it when the record specifically documents this diagnosis rather than a broader keratitis term.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe corneal inflammation with eye pain, redness, tearing, light sensitivity, or decreased vision when the cornea is involved.
When to use this code
Use H16.11 when the clinician documents macular keratitis as the final diagnosis or assessment. It is appropriate for outpatient, emergency, or specialist notes that clearly name this condition. If the chart only says “keratitis” without further detail, check documentation before assigning this code.
Do not use for
Do not use H16.11 for nonspecific keratitis, conjunctivitis, or dry eye alone. If the note does not clearly support macular keratitis, code the documented condition instead.
Coding tip
Confirm the exact corneal diagnosis in the assessment section; if the wording is unclear, query the provider.