Subluxation of metacarpophalangeal joint of thmb, sequela

This code indicates a long-term consequence or late effect of a previous subluxation (partial dislocation) of the metacarpophalangeal (MCP) joint of an unspecified thumb. This could include chronic pain, stiffness, instability, or functional impairment resulting from the initial injury.

Use this code when documenting a patient presenting with ongoing issues directly attributable to a past subluxation of the thumb's MCP joint, after the acute phase of the original injury has passed. This is appropriate for follow-up visits addressing residual symptoms or complications.

• Requires a seventh character "S" to indicate sequela, meaning the condition is a late effect of the original injury.
• Do not use for acute or initial encounters of a thumb MCP subluxation; those would use codes without the "S" seventh character.
• Ensure documentation clearly links the current symptoms to the previous subluxation event.