String or thread causing external constriction, sequela

This code describes a long-term or late-occurring health problem resulting from an external constriction caused by a string or thread. This could include chronic pain, nerve damage, circulatory issues, or scarring that persists after the initial injury from the constricting object.

Use this code when documenting conditions that are a direct consequence of a past injury involving external constriction by a string or thread. This applies to follow-up encounters for complications such as chronic lymphedema, persistent neuropathy, or skin breakdown that developed due to the original constriction.

• Requires a seventh character 'S' for sequela, indicating a complication or condition that arises as a direct result of an earlier injury.
• Always sequence this code after the code(s) identifying the specific sequela (e.g., chronic lymphedema, nerve damage).
• Do not use for acute injuries or initial encounters; refer to acute injury codes for those scenarios.