ICD-10 Code J01.2 – Acute ethmoidal sinusitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J01.2 – Acute ethmoidal sinusitis
What it is
J01.2 identifies an acute infection and inflammation of the ethmoid sinus, usually short-term and often caused by bacteria or a viral upper respiratory infection. Use it when the record clearly documents acute ethmoidal sinusitis.
Clinical signs
Typical findings include nasal congestion, facial pressure, purulent nasal drainage, and tenderness near the bridge of the nose or between the eyes. Clinical features vary; refer to documentation.
When to use this code
Use J01.2 when the provider documents acute ethmoidal sinusitis, including cases described as acute infection of the ethmoid sinus. It also fits when the note specifies ethmoidal sinusitis without a more specific laterality or complication. Check documentation if the diagnosis is mixed with other sinus sites.
Do not use for
Do not use this code for chronic, recurrent, or unspecified sinusitis unless the chart confirms an acute ethmoidal process. If the documentation only says “sinusitis” or names another sinus, select the more accurate code.
Coding tip
Code from the provider’s exact anatomic site wording; if ethmoid involvement is not documented, do not assume J01.2.