Primary blast injury of rectum, sequela

This code describes a long-term or late-appearing complication resulting from a primary blast injury specifically affecting the rectum. This type of injury is caused directly by the overpressure wave of an explosion, leading to immediate tissue damage that subsequently manifests as ongoing issues. These sequelae can include chronic pain, strictures, fistulas, incontinence, or other functional impairments of the rectum.

Use this code when documenting a current condition or symptom that is a direct, residual effect of a primary blast injury to the rectum that occurred in the past. This applies to patients presenting for evaluation or treatment of these chronic issues, not for the initial acute injury. It is appropriate when the blast event is no longer acute, and the patient is experiencing ongoing problems attributable to the original trauma.

• Always use this code with an external cause code (V00-Y99) to identify the circumstances of the blast injury, if known and relevant.
• Ensure documentation clearly links the current rectal condition as a direct sequela of a past primary blast injury.
• Do not use this code for acute blast injuries; instead, refer to the acute injury codes within the S36 category.