Fracture of unsp carpal bone, unspecified wrist, sequela

This diagnosis code indicates a fracture of any of the eight carpal bones in the wrist, where the specific bone involved is not documented. The "S" at the end signifies that this is a sequela code, meaning it is used for complications or conditions arising as a direct result of the initial injury, after the acute phase of healing has passed.

This code is appropriate when a patient presents with a long-term complication or chronic condition directly attributable to a past, unspecified carpal bone fracture. Examples include chronic pain, nonunion, malunion, or degenerative changes in the wrist joint stemming from the original injury. It should be used after the initial healing period of the fracture is complete.

• Always use this code as a secondary diagnosis, following a code that describes the specific sequela (e.g., chronic pain, nonunion).
• Ensure documentation clearly links the current condition to a previous, unspecified carpal bone fracture.
• Avoid using this code for acute or subacute fracture care; those require codes from the initial or subsequent encounter categories.