ICD-10 Code H05.412 – Enophthalmos due to atrophy of orbital tissue, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.412 – Enophthalmos due to atrophy of orbital tissue, left eye
What it is
This code identifies inward displacement of the left eye caused by loss or thinning of orbital tissue. It reflects a structural change, not a symptom-only complaint.
Clinical signs
Typical findings include a sunken appearance of the left eye and reduced orbital fullness. Clinical features vary; refer to documentation.
When to use this code
Use H05.412 when the record clearly states enophthalmos of the left eye due to atrophy of orbital tissue. You should also use it when the provider documents orbital tissue loss as the cause, even if the note does not describe the appearance in detail.
Code this only when the left-sided condition is specifically identified. If the documentation mentions enophthalmos without a cause, or another eye, check documentation before assigning this code.
Do not use for
Do not use this code for general eye retraction, trauma without documented enophthalmos, or unspecified laterality. If the cause is different or unclear, choose the documented diagnosis instead.
Coding tip
Verify both laterality and the documented cause before coding, because H05.412 is specific to left eye enophthalmos from orbital tissue atrophy.