ICD-10 Code H05.259 – Intermittent exophthalmos, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.259 – Intermittent exophthalmos, unspecified eye
What it is
This code identifies intermittent protrusion of the eyeball in an unspecified eye. Use it when the chart documents exophthalmos that comes and goes, but the laterality is not specified.
Clinical signs
Typical documentation may note episodic bulging of the eye, often more visible at certain times or positions. Clinical features vary; refer to documentation.
When to use this code
Use H05.259 when the provider clearly documents intermittent exophthalmos and does not specify right or left eye. It is appropriate for ophthalmology, neurology, or imaging notes that describe recurrent proptosis without a more specific cause. If the record identifies the underlying disorder, code that condition as well if instructed.
Do not use for
Do not use this code for constant exophthalmos, traumatic orbital displacement, or thyroid eye disease unless intermittent exophthalmos is specifically documented. Check documentation.
Coding tip
Verify laterality and whether the exophthalmos is intermittent before assigning H05.259.