Contact with fats and cooking oils, sequela

This code signifies a long-term or residual effect resulting from a past exposure to fats or cooking oils. It indicates that the initial injury or condition has resolved, but a lasting consequence, such as a scar or chronic pain, remains. This is not for the acute injury itself, but for the subsequent, persistent issue.

Use this code when documenting a patient presenting with a sequela directly attributable to a previous contact with fats or cooking oils. Examples include a healed burn scar from a grease splash, chronic dermatitis from prolonged oil exposure, or a contracture following a severe burn. The original acute event must have occurred in the past and the current encounter addresses the lasting effect.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., L90.5 for scar, L23.5 for allergic contact dermatitis due to other chemicals).
• Ensure documentation clearly links the current condition to a past exposure to fats or cooking oils.
• Do not use for acute injuries; refer to the appropriate T-code for the initial encounter.