ICD-10 Code H05.823 – Myopathy of extraocular muscles, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.823 – Myopathy of extraocular muscles, bilateral
What it is
This code identifies bilateral weakness or dysfunction of the muscles that move both eyes. It is used when the impairment is in the extraocular muscles rather than the globe itself.
Clinical signs
Clinical features may include limited eye movements, diplopia, or misalignment affecting both eyes. Findings should support extraocular muscle involvement; if uncertain, check documentation.
When to use this code
Use H05.823 when the provider documents myopathy affecting the extraocular muscles on both sides. It may apply when bilateral motility problems are recorded and the diagnosis is clearly stated. Do not infer laterality from symptoms alone; confirm the bilateral diagnosis in the note.
Do not use for
Do not use this code for nonspecific diplopia, isolated strabismus, or disorders of the eyelid or orbit without extraocular muscle myopathy. If the record does not specify bilateral involvement, check documentation.
Coding tip
Assign this code only when the provider explicitly links the condition to both extraocular muscles.