Unstable burst fracture of fourth lumbar vertebra, sequela

This code signifies a long-term complication or residual effect stemming from a burst fracture of the fourth lumbar vertebra that was initially classified as unstable. It indicates that the patient is still experiencing issues directly related to the previous severe vertebral injury, even after the acute phase has passed. These sequelae can include chronic pain, neurological deficits, or ongoing instability.

Apply this code when documenting follow-up care for a patient who previously sustained an unstable burst fracture of the L4 vertebra and is now presenting with a condition that is a direct consequence or late effect of that injury. This is appropriate for chronic conditions, deformities, or functional impairments that persist after the initial healing period. Do not use for the initial acute injury.

• Always assign a secondary code to specify the nature of the sequela (e.g., chronic pain, kyphosis, neurological deficit).
• Ensure documentation clearly links the current condition to the prior unstable L4 burst fracture.
• This "S" seventh character indicates sequela and should only be used for conditions that are late effects of the original injury.