ICD-10 Code J01.30 – Acute sphenoidal sinusitis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J01.30 – Acute sphenoidal sinusitis, unspecified
What it is
J01.30 identifies an acute infection and inflammation of the sphenoid sinus when the side or cause is not further specified. Use it for a short-term sinusitis diagnosis centered in the sphenoid sinus.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings may include headache, deep retro-orbital or vertex pain, nasal symptoms, and sinus tenderness, but the record should support sphenoid sinus involvement.
When to use this code
Use this code when the clinician documents acute sphenoidal sinusitis and does not specify an organism, side, or other qualifying detail. It also fits when the note clearly identifies the sphenoid sinus as the affected site. If the documentation is incomplete, check documentation before coding.
Do not use for
Do not use J01.30 for chronic sinusitis, sinusitis in another sinus location, or when the condition is not acute. Do not assign it if the chart only says “sinusitis” without sphenoid involvement.
Coding tip
Code from the provider’s exact sinus location wording; “sphenoid” is the key term that supports J01.30.