Strain of muscle and tendon of back wall of thorax, subs

This code signifies a muscle or tendon injury affecting the posterior thoracic wall, specifically a strain. This type of injury involves overstretching or tearing of the muscle fibers or tendons in the back of the chest, often resulting from sudden movements, overuse, or trauma.

Apply this code for patients presenting with symptoms related to a previously diagnosed strain of the back wall of the thorax who are receiving follow-up care, such as physical therapy, medication management, or repeat evaluations. This includes encounters for healing, rehabilitation, or monitoring of the injury's progression after the initial treatment phase.

• Ensure documentation clearly indicates a "subsequent encounter" for the strain.
• Distinguish from initial encounters (A) or sequela (S) codes.
• Confirm the injury location is specifically the "back wall of thorax" and not other back regions.