X58 – Exposure to other specified factors
ICD-10-CM 2027 diagnosis code · Accidental exposure to other specified factors
ICD-10-CM code
X58
- Code
X58(claims format:X58)- Description
- Exposure to other specified factors
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 20. External causes of morbidity (V00-Y99)
- Block
- X52-X58 Accidental exposure to other specified factors
Billable codes under X58
X58 is a header code and cannot be used on claims. Choose the most specific code:
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
A | initial encounter |
D | subsequent encounter |
S | sequela |
Notes for X58
Applicable to:
- Accident NOS
- Exposure NOS
7th character note:
- The appropriate 7th character is to be added to code X58
Frequently asked questions
What is ICD-10 code X58?
X58 is the ICD-10-CM code for exposure to other specified factors, in the block X52-X58 (Accidental exposure to other specified factors).
Is X58 a billable code?
No. X58 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.