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ICD-10-CM 2027

ICD-10 code for cornea cyst

H18.89

Other specified disorders of cornea

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › cornea”. Page updated September 29, 2026.

About coding cornea cyst

The ICD-10-CM code for cornea cyst is H18.89 (Other specified disorders of cornea).

Within H18.8, choose H18.89 (Other specified disorders of cornea) only when documentation doesn't support a more specific option: anesthesia and hypoesthesia of cornea (H18.81), corneal disorder due to contact lens (H18.82) and recurrent erosion of cornea (H18.83).

To report this condition, pick the subcode that matches the documentation: H18.891 (right eye), H18.892 (left eye), H18.893 (bilateral) and H18.899 (unspecified eye).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about cornea cyst ICD-10 codes

What is the ICD-10 code for cornea cyst?

H18.89 — Other specified disorders of cornea (a header code; report a more specific subcode).

Is H18.89 billable?

No. H18.89 is a header code. Report one of its more specific subcodes instead.