External constriction of flank, subsequent encounter

This code describes an injury to the flank area caused by external compression or squeezing, such as from tight clothing, a seatbelt, or a restraint. It specifically indicates that the patient is receiving follow-up care for this injury after the initial treatment.

Apply this code when a patient presents for subsequent evaluation or treatment of a flank injury resulting from external constriction. This includes visits for wound checks, pain management, or assessment of healing after the initial encounter for the same injury.

• Ensure documentation clearly states the injury is due to external constriction and specifies the flank region.
• Verify that this is not the initial encounter for the injury; if it is, a different seventh character (A) would be appropriate.
• Look for terms like "follow-up," "recheck," or "healing phase" in the medical record to confirm subsequent encounter status.