Corrosion of first deg mult sites of left ank/ft, sequela

This code indicates a long-term complication or late effect resulting from a first-degree corrosion (chemical burn) that affected multiple areas of the left ankle and foot. The initial injury has healed, but residual issues or conditions persist due to the original chemical exposure.

This code is used when documenting a current condition that is a direct consequence of a past first-degree chemical burn to the left ankle and foot. Examples include chronic pain, scarring, or altered sensation in the affected areas, where the acute injury has resolved. It should be assigned for follow-up care related to these lasting effects.

• Requires a seventh character "S" to denote sequela, indicating a complication or late effect.
• Do not use for acute chemical burns; this code is exclusively for residual conditions.
• Always code the specific nature of the sequela (e.g., scar, chronic pain) in addition to this code.