Corrosion of unspecified degree of right upper arm, sequela

This code signifies a long-term complication or residual effect resulting from a chemical burn (corrosion) to the right upper arm. The original burn's severity is not specified, and the current condition represents a permanent or chronic issue stemming from that injury.

Apply this code when documenting a patient presenting with a sequela (e.g., scarring, contracture, chronic pain, nerve damage) of a past chemical burn to the right upper arm. This code is appropriate when the acute phase of the burn has resolved, and the current encounter addresses the lasting consequences.

• Requires a seventh character 'S' to indicate sequela, meaning the current condition is a residual effect of a past injury.
• Do not use for acute chemical burns; those require codes from the T20-T25 range with an appropriate seventh character for the initial encounter or subsequent care.
• Always code the specific nature of the sequela (e.g., scar, contracture) as an additional diagnosis, if known and documented.