ICD-10 Code H05.319 – Atrophy of unspecified orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.319 – Atrophy of unspecified orbit
What it is
H05.319 identifies atrophy, or wasting, of orbital tissues when the affected orbit is not specified in the record. Use it for documented orbital volume loss or shrinkage without a more precise laterality or cause.
Clinical signs
Findings may include a sunken eye appearance, reduced orbital fullness, or asymmetry of the orbit. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents orbital atrophy but does not specify the right or left orbit. It also fits when the note describes orbital wasting, shrinkage, or loss of tissue without a more specific diagnosis. Check documentation if the cause is stated elsewhere.
Do not use for
Do not use H05.319 when the record identifies a right or left orbit, or when another orbital disorder is documented instead. Do not code it for simple eye sinking without confirmation of orbital atrophy.
Coding tip
If laterality is missing, query the provider before defaulting to unspecified orbit.