High level blast overpressure in war operations, sequela

This code signifies a long-term or residual health condition resulting from exposure to high-level blast overpressure during military combat or war operations. These sequelae can manifest as a variety of physical or psychological impairments that persist after the initial injury has healed.

Assign this code when documenting a current health problem that is directly attributable to a blast overpressure event experienced in a war zone, and the acute phase of the injury has passed. This includes conditions like chronic traumatic brain injury (TBI), persistent auditory or vestibular dysfunction, or other lasting effects.

• Always sequence this code after the specific code(s) identifying the sequela itself (e.g., TBI, hearing loss).
• Ensure documentation clearly links the current condition to a past blast overpressure event in a war setting.
• Do not use for acute blast injuries; those are coded with acute injury codes.