2027 ICD-10-CM Diagnosis Code X58Exposure to other specified factors

ICD-10-CM Codes›V01–Y99›X52-X58›X58

ICD-10-CM X58
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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

ICD-10-CM Code
X58
Billable Status
No — Non-Billable Category
Code Describes
Exposure to other specified factors
Short Description
Exposure to other specified factors
Same as the full description in the CMS dataset.
Chapter
X52-X58
Accidental exposure to other specified factors

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionX52-X58Accidental exposure to other specified factors
CategoryX58Exposure to other specified factors
This CodeX58Exposure to other specified factors

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to X58: its own notes plus those printed at Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Accident NOS
  • Exposure NOS

Notes

General instructions on how these codes are used.

From Chapter 20 (V00-Y99) External causes of morbidity and mortality applies to 7,461 codes
  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to code X58
Values for category X58 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index; each main term links to its index entry.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About X58Overview

What is the ICD-10 code for exposure to other specified factors?

X58 is the ICD-10-CM category for exposure to other specified factors, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.