Corros first degree of single r finger except thumb, sqla

This code signifies a first-degree chemical burn, also known as corrosion, affecting a single finger on the right hand, excluding the thumb. The injury specifically involves the nail or nail bed area. As a sequela code, it indicates a late effect or complication of an initial injury that has healed or is no longer acute.

Apply this code when documenting a long-term consequence or residual condition resulting from a first-degree chemical burn to a right finger's nail, excluding the thumb. This would be used after the acute phase of the burn has passed, and the patient is presenting for treatment of a persistent issue related to that original injury. Examples include nail discoloration, deformity, or chronic pain directly attributable to the past corrosion.

• Always assign a sequela code (T90-T98) as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly specifies "first-degree" and "corrosion" (chemical burn) to differentiate from thermal burns.
• Verify the affected digit is a right finger, not the thumb, and that the injury specifically involves the nail or nail bed.