Nondisp Rolando's fx, unsp hand, subs for fx w nonunion

This code describes a fracture of the base of the thumb metacarpal (Rolando's fracture) that has not shifted out of alignment. The "subsequent encounter" indicates the patient is receiving follow-up care for this fracture, and "nonunion" signifies that the bone fragments have failed to heal together after the expected healing period. The "unspecified hand" denotes that the laterality of the injury is not documented.

Use this code for a patient presenting for ongoing management of a previously diagnosed, nondisplaced Rolando's fracture where the fracture has not healed. This would apply to scenarios such as follow-up appointments for cast changes, physical therapy, or surgical planning for nonunion, when the specific hand (left or right) is not documented.

• Ensure documentation clearly states "nondisplaced" and "nonunion" for a Rolando's fracture.
• Verify that the encounter is for follow-up care, not the initial treatment.
• Avoid this code if the laterality (left or right hand) is specified in the medical record; use a more specific code.