ICD-10 Code H05.40 – Unspecified enophthalmos (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.40 – Unspecified enophthalmos
What it is
H05.40 identifies enophthalmos without a more specific cause or laterality. It means the eyeball is positioned farther back in the orbit than expected.
Clinical signs
Findings may include a sunken appearance of the eye and facial asymmetry. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents enophthalmos but does not specify the cause or whether it affects one or both eyes. It is appropriate when the record supports the diagnosis, but detail is limited. Check documentation if trauma, congenital change, or another orbital disorder is described.
Do not use for
Do not use it when the chart identifies a specific cause of the sunken eye, such as trauma or another orbital condition. Do not assign it if enophthalmos is not documented.
Coding tip
If the note lacks cause or laterality, code the unspecified diagnosis only after confirming the provider’s wording.