X30
X30: Exposure to excessive natural heat
Non-billable headerICD-10-CM
X30 is a non-billable header ICD-10-CM code for exposure to excessive natural heat. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to code X30
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Exposure to excessive heat as the cause of sunstroke
- Exposure to heat NOS
Other codes that can never be billed with X30
Their own Excludes1 notes name this code, so the conflict is not listed above.
- V93.2Heat exposure on board watercraft
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Heat(effects of) (excessive)
- Insolation, effects
- Effect of›insolation
- Forces of nature›heat(natural)
- Hot›weather, effects
- Ictus›solaris
- Overexposure›heat
- Exposure›excessive›heat NEC(natural)
- Heat›due to›weather(conditions)
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead X30
3 child codes. Green means billable.