Primary blast inj brain, NEC LOC of 30 min or less, sequela

This code signifies a long-term complication or residual effect stemming from a primary blast injury to the brain, where the initial loss of consciousness was brief, lasting 30 minutes or less. It indicates that the acute phase of the injury has passed, and the patient is now experiencing persistent neurological or cognitive deficits directly attributable to the blast trauma.

Apply this code when documenting the sequelae of a primary blast-induced traumatic brain injury where the initial loss of consciousness was explicitly recorded as 30 minutes or less. This is appropriate for follow-up encounters addressing chronic symptoms such as post-concussive syndrome, cognitive impairment, or neurological deficits that are a direct result of the past blast event. Documentation should clearly link the current condition to the previous blast injury and specify the duration of the initial loss of consciousness.

• Ensure documentation clearly states "primary blast injury" and specifies the duration of loss of consciousness as "30 minutes or less."
• This code is for sequelae; do not use for the initial acute injury.
• Always sequence this code after the specific neurological or cognitive condition being treated as a result of the sequela.