Subluxation of interphalangeal joint of left thumb, sequela

This code signifies a persistent partial dislocation or misalignment of the interphalangeal joint of the left thumb, specifically indicating that this condition is a long-term consequence of an initial injury. It describes a state where the joint surfaces are no longer in full apposition but remain in partial contact, affecting the thumb's function and stability. The "sequela" designation indicates that this subluxation is a chronic or late effect of a previous acute injury.

Use this code for patients presenting with ongoing symptoms related to a previously sustained injury to the left thumb's interphalangeal joint, where imaging confirms a chronic subluxation. This is appropriate when the initial injury has resolved, but the subluxation remains as a lasting complication. It applies to follow-up encounters for management of this chronic condition, such as physical therapy, splinting, or surgical evaluation for reconstructive procedures.

• Ensure documentation clearly states "left thumb" and "interphalangeal joint" to support the specificity of this code.
• Verify that the medical record indicates the subluxation is a "sequela" or chronic condition, not an acute injury.
• Code any associated pain or functional limitations separately, if applicable, to provide a complete clinical picture.