Pressure-induced deep tissue damage of left lower back

This code signifies a severe form of pressure injury affecting the left lower back, characterized by intact skin with underlying deep tissue damage. This damage often presents as a persistent non-blanchable deep red, maroon, or purple discoloration, or a blood-filled blister, indicating injury to the muscle or subcutaneous tissue beneath the skin.

Use this code when documentation explicitly states "deep tissue injury" or "DTI" of the left lower back, or describes the characteristic discoloration or blister formation indicative of underlying tissue damage due to pressure. This diagnosis is typically made clinically, often after ruling out other superficial pressure injuries.

• Differentiate from unstageable pressure injuries, which involve obscured full-thickness tissue loss.
• Ensure documentation specifies "left lower back" and "deep tissue damage" or "DTI."
• Do not assign a stage (e.g., Stage 1, 2) to deep tissue injuries; they are classified separately.