ICD-10 Code H18.43 – Other calcerous corneal degeneration (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.43 – Other calcerous corneal degeneration
What it is
This code identifies a corneal degeneration marked by calcium-related deposits or calcific change in the cornea. Use it when the record specifically describes another calcific corneal degeneration not classified elsewhere.
Clinical signs
Findings may include corneal opacity, visible calcific deposits, or surface irregularity on eye examination. Clinical features vary; refer to documentation.
When to use this code
Use H18.43 when the provider documents other calcareous degeneration of the cornea and does not name a more specific corneal disorder. It can fit outpatient or inpatient records where the diagnosis is confirmed by ophthalmic exam. Check documentation if the chart only notes corneal opacity without a calcific cause.
Do not use for
Do not use this code for corneal dystrophies, ulcers, or trauma-related corneal changes unless the clinician documents calcareous degeneration. If the note is nonspecific, check documentation.
Coding tip
Match the code to the exact ophthalmology wording; “calcific” or “calcareous” corneal degeneration supports H18.43.