ICD-10 Code J34.2 – Deviated nasal septum (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J34.2 – Deviated nasal septum
What it is
J34.2 identifies a displaced or crooked nasal septum, the wall that separates the nostrils. It is used when the septal deviation is documented as the diagnosis.
Clinical signs
Common findings include nasal obstruction, mouth breathing, or unilateral airflow reduction. Clinical features vary; refer to documentation.
When to use this code
Use J34.2 when the provider documents deviated nasal septum, septal deviation, or similar wording as the reason for evaluation. It may appear in office, ENT, or preoperative records when the deviation is the active diagnosis. Use the code only when the condition is clearly stated.
Do not use for
Do not use this code for general nasal congestion, rhinitis, or sinus disease without documented septal deviation. Check documentation if the note describes trauma or another nasal disorder instead.
Coding tip
Code the septal deviation only when the provider documents it explicitly; do not infer it from symptoms alone.