Corros 3rd deg mu sites of shldr/up lmb, ex wrs/hnd, init

This code signifies a severe, full-thickness burn (corrosion) affecting multiple areas of the shoulder and upper limb, excluding the wrist and hand. The injury has destroyed all layers of skin and potentially underlying tissue, and the specific sites involved are not documented.

Apply this code for initial encounters when a patient presents with third-degree chemical burns or other corrosive injuries impacting various unspecified regions of the upper arm, elbow, or shoulder. This is appropriate when the medical record clearly indicates multiple affected sites within this anatomical range, but without precise localization.

• Ensure documentation specifies "third degree" or "full thickness" and "corrosion" for accurate code assignment.
• Only use this code if the specific sites on the shoulder and upper limb (excluding wrist/hand) are not individually identified.
• Verify this is the patient's initial encounter for this specific injury.