Corneal ectasia, unspecified eye

This code represents a non-inflammatory thinning and bulging of the cornea, leading to an irregular corneal shape and potentially impaired vision. It signifies a general diagnosis of corneal ectasia without further specification of the affected eye or the underlying cause.

Use this code when documentation indicates corneal ectasia but does not specify laterality (right, left, or bilateral). This is appropriate when the physician's notes simply state "corneal ectasia" without further detail regarding the affected eye.

• Always seek clarification from the provider if laterality is not documented to assign a more specific code (H18.711, H18.712, H18.713).
• Do not use this code if the documentation specifies a particular type of ectasia, such as keratoconus (H18.6x).
• This code should be used when the medical record lacks sufficient information to assign a more precise laterality code.