Emphysema (subcutaneous) resulting from a procedure, sequela

This code signifies the long-term or late effect of subcutaneous emphysema that developed as a complication of a medical or surgical procedure. Subcutaneous emphysema is characterized by air or gas trapped under the skin, often causing swelling and a crackling sensation upon palpation. In this context, it is no longer an acute event but a persistent or residual issue stemming from a prior intervention.

Use this code when documenting a patient presenting with persistent or residual subcutaneous emphysema that is clearly attributed to a past surgical or medical procedure. This applies when the emphysema is no longer actively forming but is a chronic or lingering consequence. It is appropriate for follow-up encounters where the sequela of the procedural complication is being addressed.

• Always sequence this code after the code for the underlying condition or reason for the encounter, if applicable.
• Ensure documentation clearly links the subcutaneous emphysema to a specific prior procedure and indicates its chronic or sequela nature.
• Do not use this code for acute, active subcutaneous emphysema; instead, use the appropriate acute complication code.