ICD-10 Code H27.121 – Anterior dislocation of lens, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H27.121 – Anterior dislocation of lens, right eye
What it is
This code identifies a lens that has moved out of its normal position and displaced forward in the right eye. It is used when the lens is documented as anteriorly dislocated, not merely subluxed.
Clinical signs
Typical findings include a visibly displaced lens, decreased vision, and possible eye pain or redness. Clinical features vary; refer to documentation, especially if the exam notes glaucoma, corneal touch, or trauma.
When to use this code
Use H27.121 when the record specifically states anterior dislocation of the crystalline lens in the right eye. Apply it for traumatic or nontraumatic cases if the provider documents the dislocation rather than another lens disorder.
Check documentation when the note only says lens subluxation, aphakia, cataract, or lens instability, because those are different diagnoses. If laterality is unclear, you should not assume the right eye.
Do not use for
Do not use this code for posterior lens dislocation, partial lens subluxation, or unspecified lens displacement. It is also not correct for cataract alone or for postoperative lens issues unless the provider documents anterior dislocation.
Coding tip
Confirm both laterality and direction of dislocation in the ophthalmology note before assigning H27.121.