Corros unsp deg mult sites of shldr/up lmb, ex wrs/hnd, sqla

This code describes the long-term effects or complications arising from a chemical burn (corrosion) that affected multiple, unspecified areas of the shoulder and upper limb, excluding the wrist and hand. The original burn's severity is not specified, and the current encounter addresses a residual condition rather than the acute injury.

Use this code when documenting a patient presenting with a sequela (e.g., scar contracture, chronic pain, functional impairment) directly attributable to a past chemical burn involving multiple sites of the shoulder and upper limb, but not the wrist or hand. This code is appropriate for follow-up encounters after the initial acute injury has healed.

• Always use this code as a secondary diagnosis, following a code that specifies the nature of the sequela (e.g., scar, contracture).
• Ensure documentation clearly links the current condition to a past chemical burn of the specified body regions.
• Avoid using this code for acute chemical burns; instead, refer to the acute T22.0-T22.3 series.