Unspecified injury of left external jugular vein, sequela

This code signifies a long-term complication or late effect resulting from an unspecified injury to the left external jugular vein. This could include conditions such as chronic pain, scarring, persistent swelling, or impaired venous drainage that developed after the initial injury has healed. The "sequela" designation indicates that the acute phase of the injury has passed.

Apply this code when documentation clearly indicates a residual condition or complication stemming from a past, unspecified injury to the left external jugular vein. This is appropriate for follow-up encounters addressing these chronic issues, not for the initial acute injury. Documentation should specify the laterality (left) and the nature of the sequela.

• Always use this code with an additional code identifying the specific nature of the sequela (e.g., chronic pain, scar, venous insufficiency).
• Ensure the documentation explicitly states "sequela" or describes a chronic condition resulting from a past injury to the left external jugular vein.
• Do not use this code for acute injuries; instead, use the appropriate acute injury code from the S15.20- category.