Strain of muscle, fascia and tendon of lower back, subs

This code signifies a non-traumatic injury to the soft tissues of the lower back, specifically involving the muscles, fascia, or tendons. It represents an overstretching or tearing of these structures, leading to pain and functional limitation in the lumbar region.

This code is appropriate for follow-up encounters where a patient is receiving ongoing treatment for a previously diagnosed lower back strain. This includes visits for physical therapy, medication management, or re-evaluation of symptoms during the healing process. It should not be used for the initial injury.

• Ensure documentation clearly indicates a "subsequent encounter" for the strain.
• Verify the injury is localized to the lower back and involves muscle, fascia, or tendon.
• Distinguish from sprains (ligamentous injury) or other lower back pain etiologies.