Sprain of interphalangeal joint of right thumb, init encntr

This diagnosis code signifies a ligamentous injury to the joint between the two bones of the right thumb, specifically the interphalangeal joint. This injury involves stretching or tearing of the ligaments supporting this joint, without a fracture or dislocation.

This code is appropriate for patients presenting with pain, swelling, and limited range of motion in the right thumb's interphalangeal joint following an acute injury. It is used when the sprain is a new injury or a flare-up of an existing condition being actively treated.

• Ensure documentation specifies the right thumb and the interphalangeal joint.
• Confirm the encounter is initial for this specific injury; subsequent encounters will require a different seventh character.
• Differentiate from dislocations (S63.1-) or fractures (S62.6-) of the thumb.