ICD-10 Code J34.8202 – Internal nasal valve collapse, dynamic (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J34.8202 – Internal nasal valve collapse, dynamic
What it is
This code identifies dynamic collapse of the internal nasal valve, the narrowest part of the nasal airway. The collapse usually happens during inspiration and can reduce airflow through the nose.
Clinical signs
Common findings include nasal obstruction that worsens with breathing in, visible inward narrowing of the sidewall, and improvement with a nasal support maneuver. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents dynamic internal nasal valve collapse as the cause of nasal obstruction. It also fits when exam findings or endoscopy support the diagnosis and the note clearly distinguishes it from other nasal airway problems.
If the record only says “nasal obstruction” or “nasal congestion,” check documentation before coding. You should code the specific documented structural diagnosis, not a nonspecific symptom alone.
Do not use for
Do not use this code for general stuffy nose, allergic rhinitis, or external nasal valve collapse unless the provider documents internal nasal valve involvement. Check documentation.
Coding tip
Look for wording such as “dynamic collapse,” “internal nasal valve,” or “positive Cottle-type support response” before assigning J34.8202.