Other sprain of unspecified thumb, initial encounter

This code signifies a sprain affecting any ligament within the thumb, excluding the ulnar collateral ligament, where the specific ligament involved is not documented. It indicates the patient is receiving initial treatment for this injury.

Apply this code when a patient presents with a thumb sprain, and the medical record specifies "other sprain" or "unspecified sprain" of the thumb, without identifying the specific ligament. This is appropriate for the initial visit for this particular injury.

• Ensure documentation clearly states "sprain" and not a fracture or dislocation.
• Verify that the encounter is the first for this specific injury to use the "A" seventh character.
• If the specific ligament (e.g., ulnar collateral ligament) is identified, a more specific code should be used.