Corrosions of unspecified internal organs, initial encounter

This code signifies damage to an internal organ caused by a corrosive substance, such as a strong acid or alkali, where the specific organ affected is not documented. It represents the initial phase of treatment for such an injury, indicating the patient is actively receiving care for the acute effects.

Use this code when a patient presents with an internal organ injury due to ingestion or exposure to a corrosive agent, and the medical record does not specify which internal organ is affected. This is appropriate for the initial hospital visit or emergency department encounter for the acute injury.

• Always strive for a more specific code if the internal organ is identified (e.g., esophagus, stomach).
• Ensure the documentation clearly states "corrosion" or "chemical burn" to an internal organ.
• Append a subsequent encounter (D) or sequela (S) character for follow-up care or long-term effects, respectively.