Unsp injury of blood vessels of thorax, left side, sequela

This code signifies a long-term complication or late effect resulting from an unspecified injury to a non-major blood vessel within the left side of the chest. The original injury is no longer acute, and the patient is now experiencing residual issues directly attributable to that past trauma.

Apply this code when documenting a sequela of an unspecified, non-acute injury to a minor blood vessel on the left side of the thorax. This is appropriate for conditions like chronic pain, scarring, or functional impairment that developed as a direct consequence of a previous thoracic vascular injury, where the specific vessel was not identified.

• Requires a seventh character 'S' to indicate sequela, meaning the initial injury has healed but its effects persist.
• Only use when the specific blood vessel injured is unknown or not documented.
• Always sequence the sequela code first, followed by codes for the specific residual condition(s).