Disp fx of proximal phalanx of unspecified thumb, sequela

This code signifies a long-term complication or late effect resulting from a displaced fracture of the proximal phalanx of an unspecified thumb. It indicates that the initial injury has healed, but the patient is still experiencing residual problems directly attributable to that fracture.

Apply this code when documenting conditions such as chronic pain, deformity, limited range of motion, or nonunion/malunion that are a direct consequence of a previously displaced proximal phalanx thumb fracture. This code is appropriate for encounters where the initial acute injury is no longer being treated, but its lasting effects are.

• Always sequence this code after the code for the specific sequela (e.g., M20.09 for other deformities of thumb).
• Ensure documentation clearly links the current condition to the previous displaced proximal phalanx fracture.
• Do not use this code for initial treatment of the acute fracture or for follow-up care during the healing phase.