Traumatic subcutaneous emphysema, sequela

This code signifies the long-term or late effects of air or gas trapped under the skin due to a previous injury. This condition, known as subcutaneous emphysema, has resolved but has left a lasting impact or complication.

Apply this code when documenting a patient presenting with a current problem or condition that is a direct consequence of a past episode of traumatic subcutaneous emphysema. This includes persistent discomfort, cosmetic deformities, or functional limitations directly attributable to the prior air leakage under the skin.

• This code is for sequelae, meaning the acute phase of the subcutaneous emphysema has passed.
• Always code the underlying cause of the original trauma if it is still relevant to the sequela.
• Do not use this code for acute or active traumatic subcutaneous emphysema; refer to codes in the T79.7XXA or T79.7XXD categories for initial or subsequent encounters.