External constriction, unspecified thigh, sequela

This code signifies the long-term effects or complications arising from an external constriction injury to an unspecified thigh. It indicates that the initial injury has resolved, but residual issues such as chronic pain, nerve damage, circulatory problems, or tissue changes persist.

Apply this code when documenting a patient presenting with ongoing symptoms directly attributable to a past external constriction injury of the thigh, where the specific thigh (left or right) is not documented. This is appropriate for follow-up visits addressing the chronic sequelae, not the acute injury itself.

• Always ensure the "S" seventh character is used for sequela, indicating a late effect.
• Pair this code with additional codes to specify the nature of the sequela (e.g., chronic pain, nerve palsy, lymphedema).
• Avoid using this code for acute or initial constriction injuries; those require codes from the S70.3- series without the "S" seventh character.