ICD-10 Code H05.329 – Deformity of unspecified orbit due to bone disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.329 – Deformity of unspecified orbit due to bone disease
What it is
H05.329 identifies a structural deformity of the orbit caused by an underlying bone disease, when the specific orbit is not documented. Use it for abnormal orbital shape or alignment linked to skeletal pathology.
Clinical signs
Findings may include visible orbital asymmetry, altered eye position, or facial contour changes related to bone abnormality. Clinical features vary; refer to documentation for the exact orbital involvement and cause.
When to use this code
Use this code when the record states deformity of the orbit and attributes it to bone disease, but does not identify the side or a more specific orbital site. It also fits when the provider documents an unspecified orbit with a bone-related deformity. You should code the documented bone disease separately if instructed and supported.
Do not use for
Do not use this code for orbital deformity from trauma, tumor, infection, or congenital conditions unless bone disease is documented as the cause. Do not assign it when a more specific orbital code is available.
Coding tip
Check for laterality and the exact bone disorder in the note before defaulting to an unspecified orbital code.