Primary blast injury of lung, unspecified, sequela

This code signifies a long-term or late-effect condition resulting from an initial blast injury to the lung. The specific nature or extent of the lung damage is not documented. This diagnosis indicates that the patient is experiencing ongoing health issues directly attributable to a past primary blast event affecting their pulmonary system.

Apply this code when a patient presents with a chronic or residual condition of the lung that is a direct consequence of a primary blast injury, and the specific type of lung injury was not previously or cannot currently be specified. This is appropriate for follow-up encounters where the sequela of the original injury is being treated or monitored, long after the acute phase has passed.

• Always use a sequela code for conditions that are residual effects of a previous injury.
• Ensure documentation clearly links the current lung condition to a past primary blast injury.
• Avoid using this code for acute blast injuries; those require acute injury codes.