J70.5

HCC Category Mapping

What This Code Means

Breathing problems and lung damage resulting from inhaling smoke, such as from fires, cigarettes, or other burning materials.

Coding Tips

• •Link this code with external cause codes (Chapter 20) to document the source of smoke exposure
• •Specify the type of smoke exposure in documentation (e.g., house fire, occupational exposure) for clarity

Clinical Significance

Respiratory conditions from smoke inhalation capture acute and chronic airway and parenchymal injury from fire smoke, industrial smoke, or other combustion products. This is clinically significant because smoke inhalation can cause immediate airway compromise and long-term bronchiolitis obliterans, representing both acute emergency and chronic disease management needs.

Documentation Requirements

• ✓Source and circumstances of smoke exposure (house fire, occupational, wildfire, etc.)
• ✓Duration and intensity of smoke exposure
• ✓Clinical findings including airway examination, bronchoscopy results if performed
• ✓Chest imaging findings
• ✓Carboxyhemoglobin levels or cyanide levels if relevant
• ✓External cause codes documenting the fire or smoke source
• ✓Treatment provided and respiratory support requirements

Commonly Confused Codes