ICD-10 Code H05.021 – Osteomyelitis of right orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.021 – Osteomyelitis of right orbit
What it is
H05.021 identifies osteomyelitis involving the right orbit. Use it when the record documents infection and inflammation of the orbital bone on the right side.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include orbital pain, swelling, redness, tenderness, and signs of local infection affecting the right orbital structures.
When to use this code
Use this code when the provider specifically diagnoses osteomyelitis of the right orbit. It is appropriate for confirmed right-sided orbital bone infection, whether noted in outpatient assessment, imaging interpretation, or discharge diagnosis.
If the chart only says orbital infection, cellulitis, or abscess without bone involvement, check documentation before assigning H05.021. Code the documented site and laterality exactly as stated.
Do not use for
Do not use H05.021 for nonspecific eye infection, orbital cellulitis, or sinus infection without orbital bone involvement. If laterality is not right, do not assign this code.
Coding tip
Confirm that osteomyelitis is explicitly documented and that the right orbit is named; laterality matters for this code.