In simple words: Toxic erythema is a skin rash caused by a poison or toxin.The doctor will likely also code the type of poison or toxin that caused the rash.

Toxic erythema is a skin condition characterized by redness and inflammation caused by a toxin or poison.This code should be used when the erythema is a result of a toxic substance.Code first any poisoning due to drug or toxin (T36-T65 with fifth or sixth character 1-4). Use an additional code for any adverse effect to identify the drug (T36-T50 with fifth or sixth character 5).Excludes neonatal erythema toxicum (P83.1).

Example 1: A patient presents with a widespread, intensely red rash following ingestion of a poisonous mushroom.L53.0 is coded to describe the toxic erythema, and additional codes would be used to specify the poisoning., A child develops a bright red rash after accidental exposure to a toxic plant. L53.0 would be coded alongside codes reflecting the specific plant exposure and any resulting systemic effects., An adult experiences a severe skin reaction after taking a new medication. L53.0 is coded for the toxic erythema; the specific medication and adverse reaction would also be coded using additional codes.

Detailed history of exposure to potential toxins or poisons, physical examination documenting the rash's characteristics (location, extent, appearance), laboratory findings (toxicology screen results if applicable), and treatment provided.

** Consider the possibility of underlying conditions which may have contributed to susceptibility to the toxin. This condition is often associated with other symptoms, such as nausea, vomiting, and dizziness. Always code the underlying cause of the toxic erythema if known.