ICD-10 Code H52.511 – Internal ophthalmoplegia (complete) (total), right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.511 – Internal ophthalmoplegia (complete) (total), right eye
What it is
This code identifies complete loss of the eye’s internal focusing response in the right eye. It describes impaired pupil and accommodation function, not a general eye movement disorder.
Clinical signs
You may see a fixed or poorly reactive pupil and loss of accommodation in the right eye. Clinical features vary; refer to documentation.
When to use this code
Use H52.511 when the provider documents complete internal ophthalmoplegia affecting the right eye. It may appear in neurologic or ophthalmic evaluations where the finding is clearly unilateral and complete. Check documentation if the note does not specify laterality or completeness.
Do not use for
Do not use this code for external ophthalmoplegia, generalized eye movement weakness, or unspecified ocular motor palsy. If the record only says “ophthalmoplegia” without details, Check documentation.
Coding tip
Confirm that the chart states both “complete/total” and “right eye” before assigning H52.511.