ICD-10 Code J01.01 – Acute recurrent maxillary sinusitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J01.01 – Acute recurrent maxillary sinusitis
What it is
Use this code for an acute infection of the maxillary sinus that keeps coming back. It indicates a new acute episode affecting the cheek sinus, not chronic sinusitis.
Clinical signs
Typical findings include facial pressure or pain over the cheeks, nasal congestion, and purulent nasal drainage. Clinical features vary; refer to documentation.
When to use this code
Assign J01.01 when the record clearly documents acute recurrent maxillary sinusitis or a recurrent acute infection of the maxillary sinus. Use it when the provider identifies the maxillary sinus as the site and the episode is acute rather than chronic. Check documentation if recurrence is not specified.
Do not use for
Do not use this code for chronic maxillary sinusitis, acute sinusitis of another sinus, or unspecified sinusitis. If the note does not confirm recurrence or maxillary involvement, check documentation.
Coding tip
Verify both acuity and sinus location in the provider note before assigning J01.01.