Superficial frostbite of unspecified arm, sequela

This code indicates a past episode of superficial frostbite affecting an unspecified arm, where the acute injury has resolved but residual effects or complications are still present. These sequelae might include persistent numbness, hypersensitivity to cold, skin discoloration, or other long-term issues stemming from the original frostbite.

Use this code when documenting a patient presenting with ongoing symptoms or conditions directly attributable to a superficial frostbite injury of an arm that occurred in the past. This applies when the original frostbite is no longer an active injury but its lasting impact requires medical attention.

• Requires a seventh character "S" to denote sequela, indicating a late effect.
• Do not use for acute frostbite; refer to codes without the "S" seventh character for current injuries.
• Always code the specific sequela (e.g., chronic pain, sensory disturbance) first, followed by this code as a secondary diagnosis.