ICD-10 Code H05.409 – Unspecified enophthalmos, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.409 – Unspecified enophthalmos, unspecified eye
What it is
This code identifies inward displacement of the eyeball in an unspecified eye, without a documented cause or side. Use it when the record confirms enophthalmos but does not specify laterality or underlying condition.
Clinical signs
Typical findings include a sunken-appearing eye, reduced prominence of the globe, or facial asymmetry. Clinical features vary; refer to documentation if the note does not clearly describe the eye involved or the cause.
When to use this code
Use H05.409 when the clinician documents enophthalmos and does not identify whether it is right, left, or bilateral. It also fits when the chart lacks enough detail to assign a more specific code. You should code the documented finding, not the suspected cause.
Do not use for
Do not use this code if the record specifies the affected eye or a different orbital disorder. Check documentation if enophthalmos is secondary to trauma, surgery, or another diagnosed condition that requires a more specific code.
Coding tip
If laterality is present anywhere in the note, code the more specific option instead of H05.409.