Internal nasal valve collapse, dynamic

This code describes a condition where the internal nasal valve, a critical area for airflow within the nose, collapses inward during inspiration. This dynamic collapse obstructs the nasal airway, leading to symptoms such as difficulty breathing through the nose, nasal congestion, and reduced airflow. It is often exacerbated by deep breathing or exercise.

Use this code when documentation explicitly states "internal nasal valve collapse, dynamic" or similar phrasing indicating an inward movement of the nasal valve during breathing. This diagnosis is typically made through physical examination, often involving modified Cottle maneuvers or direct visualization during endoscopy, confirming the dynamic nature of the collapse.

• Differentiate from static internal nasal valve collapse, which would be coded differently.
• Ensure documentation specifies "dynamic" to support the use of this particular code.
• Consider co-occurring conditions like septal deviation or turbinate hypertrophy, which may contribute to or exacerbate nasal obstruction.