Unspecified subluxation of unspecified thumb, init encntr

This code signifies a partial dislocation of an unknown joint within the thumb, where the specific joint (e.g., carpometacarpal, metacarpophalangeal, interphalangeal) is not documented. It indicates the initial presentation of this injury.

Use this code when the medical record clearly states a thumb subluxation but lacks specificity regarding the affected joint or the laterality (left/right). This is appropriate for the initial evaluation and treatment of such an injury.

• Only use when the documentation explicitly states "unspecified thumb" and "unspecified subluxation."
• Always seek clarification from the provider if the specific joint or laterality can be determined.
• Append with subsequent encounter (D) or sequela (S) characters for follow-up visits or late effects.