Traumatic brain compression without herniation, init

This code signifies a brain injury where increased intracranial pressure is compressing brain tissue, but without evidence of brain herniation (displacement of brain tissue through an opening). This condition is typically caused by trauma, such as a contusion, hematoma, or edema, leading to a mass effect within the skull.

Apply this code when documentation explicitly states "traumatic brain compression" and confirms the absence of herniation. This is appropriate for the initial phase of treatment, including emergency department visits, initial hospital admissions, or the first encounter for this specific injury. Supporting documentation includes neuroimaging (CT, MRI) reports detailing mass effect and compression without herniation, and physician notes describing the traumatic etiology.

• Ensure documentation explicitly rules out herniation; if herniation is present, a different code is required.
• Verify the encounter type is "initial" for this specific injury; subsequent encounters will use different seventh characters.
• Always code the underlying traumatic brain injury (e.g., cerebral contusion, intracranial hematoma) as the primary diagnosis, with this code as a secondary diagnosis if applicable.