Corros 10-19% of body surface w 10-19% third degree corros

This code signifies a severe chemical burn, or corrosion, affecting a moderate portion of the patient's total body surface area (TBSA). Specifically, 10% to 19% of the body has sustained corrosive injury, with a significant portion (10% to 19%) of that injury being full-thickness (third-degree) damage. This indicates deep tissue destruction requiring extensive medical intervention.

Apply this code when documentation clearly indicates a chemical burn affecting 10-19% TBSA, and within that affected area, 10-19% is explicitly classified as third-degree. This is typically used for initial encounters for acute corrosive injuries.

• Ensure the documentation specifies both the total body surface area affected by corrosion and the percentage of third-degree involvement.
• Do not use this code for thermal burns; it is exclusively for corrosions (chemical burns).
• Remember to also code for any associated complications or sequelae, and external cause codes (e.g., T54.x for toxic effect of corrosive substances).