X39.0
⚠ Non-billable
Exposure to natural radiation
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
X39.0
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code X39.0?
ICD-10-CM code X39.0 represents Exposure to natural radiation. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is X39.0 billable?
No. X39.0 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is X39.0 in?
X39.0 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the X39 category
X39
Exposure to other forces of nature
Non-billable
X39.8
Other exposure to forces of nature
Non-billable
X39.01
Exposure to radon
Non-billable
X39.08
Exposure to other natural radiation
Non-billable
X39.01XA
Exposure to radon, initial encounter
Billable
X39.01XD
Exposure to radon, subsequent encounter
Billable
X39.01XS
Exposure to radon, sequela
Billable
X39.08XA
Exposure to other natural radiation, initial encounter
Billable
Search all 98,186 ICD-10-CM codes instantly
Search ICDwise →