2026 ICD-10-CM Diagnosis Code X58Exposure to other specified factors
X58 is a non-billable ICD-10-CM category code for exposure to other specified factors, so it cannot be submitted on claims. Use a more specific code from this category instead, such as X58.XXXA, X58.XXXD, and X58.XXXS.
Code Identity
Code Classification
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Accident NOS
- Exposure NOS
7th Character Note
- The appropriate 7th character is to be added to code X58
7th Character
- A - initial encounter
- D - subsequent encounter
- S - sequela
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.
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.
Indicates that a seventh character is to be assigned to codes in a subcategory.
Code HistoryHistory
Questions About X58Overview
Is X58 (Exposure to other specified factors) a billable code?
No. This is a category header that groups the codes for exposure to other specified factors, and headers cannot be submitted on claims. Claims for exposure to other specified factors need a more specific code from this category, such as X58.XXXA, X58.XXXD, and X58.XXXS.
