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  4. X52-X58
  5. Exposure to other specified factors (X58)

Exposure to other specified factors (X58)

The ICD-10 code X58 is used to classify medical cases involving exposure to a wide range of other specified harmful factors that are not classified elsewhere. These codes capture incidents from accidental contact with environmental elements, biological agents, chemical exposure, to ingestion of toxic substances.

Specifically, the codes under X58 cover conditions such as exposure to extreme temperatures, poisonous plants or animals, chemical agents like insecticides or cleaning products, and various accidental ingestions of toxic substances or contaminated food. Synonyms and related terms for these exposures include accidental ingestion of toxic berries, contact with venomous spiders, exposure to magnetic fields, and injuries caused by environmental factors like pressure changes during diving. The classification includes the initial encounter (X58.XXXA), subsequent encounters (X58.XXXD), and sequela or long-term effects (X58.XXXS). This ICD-10 code is essential for coding incidents involving exposure to numerous specified hazards not covered by other codes, helping medical coders accurately document accidental and environmental exposure-related injuries or conditions.

Instructional Notations

Inclusion Terms

These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

  • Accident NOS
  • Exposure NOS

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

  • The appropriate 7th character is to be added to code X58

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela