ICD-10 Code H05.413 – Enophthalmos due to atrophy of orbital tissue, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.413 – Enophthalmos due to atrophy of orbital tissue, bilateral
What it is
This code describes bilateral enophthalmos, meaning both eyes appear sunken because orbital tissue has atrophied. Use it when the record specifically identifies tissue loss in the eye sockets as the cause.
Clinical signs
Typical findings include a posteriorly displaced globe on both sides and a visibly sunken eye appearance. Clinical features vary; refer to documentation for the confirmed cause and laterality.
When to use this code
Use H05.413 when the clinician documents bilateral enophthalmos due to atrophy of orbital tissue, such as after chronic volume loss in the orbit. It is appropriate when the diagnosis is clearly stated and the condition is not being coded under a different cause.
You should also confirm that both sides are involved and that the note links the enophthalmos to orbital tissue atrophy. If the chart only says “sunken eyes” or the cause is unclear, check documentation before assigning this code.
Do not use for
Do not use this code for unilateral enophthalmos, trauma-related globe recession, or general facial wasting without orbital tissue atrophy. Check documentation if the cause is not explicitly documented.
Coding tip
Capture the documented cause and laterality together; H05.413 requires bilateral enophthalmos due to orbital tissue atrophy.