ICD-10 Code H05.049 – Tenonitis of unspecified orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.049 – Tenonitis of unspecified orbit
What it is
H05.049 identifies inflammation of Tenon’s capsule in an unspecified orbit. Use it when the record states tenonitis or periscleritis around the eye, but does not specify the right or left side.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include orbital pain, tenderness, redness, swelling, and discomfort with eye movement, but the diagnosis should be supported by the clinician’s assessment.
When to use this code
Use H05.049 when the provider documents tenonitis and does not identify the affected orbit. It may also fit when the note confirms inflammation of Tenon’s capsule without laterality. If the record is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for nonspecific eye pain, conjunctivitis, or other orbital disorders unless tenonitis is specifically documented. If the chart names a right or left orbit, use the laterality-specific code instead.
Coding tip
Always verify laterality in the note; unspecified codes are appropriate only when the provider truly does not document the orbit.