Subluxation of unspecified ankle joint, sequela

This code signifies a partial dislocation of an ankle joint, where the joint surfaces are no longer in proper alignment but remain in partial contact. It specifically refers to a long-term complication or residual effect of an initial injury, rather than the acute event itself. The "unspecified" nature indicates that the specific ankle joint (e.g., talocrural, subtalar) is not documented.

This code is appropriate for documenting chronic instability, pain, or functional limitations in the ankle that are directly attributable to a past subluxation. It should be used when the patient presents for treatment of these persistent issues, and the original injury has already healed. This code is also applicable when the specific ankle joint involved in the subluxation is not clearly identified in the medical record.

• Always append the 7th character "S" for sequela when using this code, indicating a late effect.
• Ensure documentation clearly links the current ankle condition to a previous subluxation.
• If the specific ankle joint affected by the subluxation is known and documented, a more specific code should be used instead.