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X30

Billable

Exposure to excessive natural heat

X30 is the ICD-10-CM code for Exposure to excessive natural heat. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
V00-Y99
Edition
FY2026

V00-Y99 External causes of morbidity

What this means — in plain language

MedlinePlus · NIH

Your body normally cools itself by sweating. During hot weather, especially when it is very humid, sweating just isn't enough to cool you off. Your body temperature can rise to dangerous levels and you can develop a heat illness. Most heat illnesses happen when you stay out in the heat too long. Exercising and working outside in high heat can also lead to heat illness. Older adults, young children, and those who are…

Read more about Heat Illness at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • •Exposure to excessive heat as the cause of sunstroke
  • •Exposure to heat NOS

Excludes1 — not coded here

  • •excessive heat of man-made origin (W92)
  • •exposure to man-made radiation (W89)
  • •exposure to sunlight (X32)
  • •exposure to tanning bed (W89)

Frequently asked questions

What is ICD-10 code X30?
X30 is the ICD-10-CM code for "Exposure to excessive natural heat". It falls under V00-Y99 External causes of morbidity.
Is X30 a billable code?
Yes — X30 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from X30?
Excludes1 (not coded here): excessive heat of man-made origin (W92); exposure to man-made radiation (W89); exposure to sunlight (X32); exposure to tanning bed (W89).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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