ICD-10 Code H18.049 – Kayser-Fleischer ring, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.049 – Kayser-Fleischer ring, unspecified eye
What it is
This code identifies a Kayser-Fleischer ring when the affected eye is not specified. It refers to a corneal copper deposit seen on eye examination.
Clinical signs
Typical findings include a brownish or golden ring at the corneal margin, best seen on slit-lamp examination. Clinical features vary; refer to documentation.
When to use this code
Use H18.049 when the record documents a Kayser-Fleischer ring but does not state right or left eye. It is appropriate for ophthalmology notes, consultation reports, or problem lists that identify the ring without laterality. If the chart specifies an eye, code the laterality instead.
Do not use for
Do not use this code for other corneal deposits or for ocular findings that are not documented as Kayser-Fleischer rings. Check documentation if the eye is specified or if the finding is only suspected.
Coding tip
Confirm whether the provider documented laterality before assigning the unspecified-eye code.