External constriction of unspecified part of neck, sequela

This code signifies a long-term or late effect resulting from an external constriction injury to an unspecified area of the neck. This could include chronic pain, nerve damage, or functional limitations that persist after the initial injury has healed. The original cause of the constriction is no longer active, but its lasting impact is being addressed.

Apply this code when documentation clearly indicates a residual condition or complication stemming from a past external constriction injury to the neck. This is appropriate when the patient is presenting for treatment of these lasting effects, rather than the acute injury itself. Supporting documentation should detail the previous injury and the current sequela.

• Always sequence this sequela code after the code describing the specific nature of the sequela (e.g., chronic pain, dysphagia).
• Ensure documentation specifies "sequela" or "late effect" to justify using the 7th character 'S'.
• Do not use this code for acute or active external constriction injuries; those require codes from the initial encounter or subsequent encounter categories.