Corros first deg mult left fngr (nail), not inc thumb, sqla

This code signifies a long-term complication or late effect resulting from a first-degree chemical burn (corrosion) affecting multiple fingers on the left hand, excluding the thumb. The injury specifically involves the nail or nail bed area of these fingers.

Use this code when documenting a patient presenting with a residual condition or sequela directly attributable to a past first-degree corrosive burn of the left fingers' nails. This applies to situations where the initial injury has healed, but a lasting effect, such as nail deformity or chronic pain, is being treated.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a previous first-degree corrosive burn of the left fingers (excluding thumb).
• Verify that the burn was indeed a corrosion (chemical burn) and not a thermal burn, as different codes apply.