Primary blast injury of brain, NEC LOC of 31-59 min, subs

This code signifies a brain injury sustained from a primary blast wave, not categorized elsewhere, where the patient experienced a loss of consciousness lasting between 31 and 59 minutes. This specific code is used for encounters following the initial treatment phase for this injury.

Apply this code for follow-up visits, rehabilitation, or ongoing management of a patient previously diagnosed with a primary blast injury of the brain, who initially presented with a loss of consciousness between 31 and 59 minutes. Documentation should clearly state the nature of the injury, the duration of unconsciousness, and that this is not the initial encounter for the injury.

• Ensure the documentation explicitly states "primary blast injury" and specifies the duration of loss of consciousness as 31-59 minutes.
• The 7th character "D" indicates a subsequent encounter; do not use for the initial treatment of the injury.
• Differentiate from other traumatic brain injuries (TBIs) not caused by a primary blast, and ensure the correct duration of unconsciousness is documented.