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X31

Billable

Exposure to excessive natural cold

X31 is the ICD-10-CM code for Exposure to excessive natural cold. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
V00-Y99
Edition
FY2026

V00-Y99 External causes of morbidity

Includes

  • •Excessive cold as the cause of chilblains NOS
  • •Excessive cold as the cause of immersion foot or hand
  • •Exposure to cold NOS
  • •Exposure to weather conditions

Excludes1 — not coded here

  • •cold of man-made origin (W93.-)
  • •contact with or inhalation of dry ice (W93.-)
  • •contact with or inhalation of liquefied gas (W93.-)

Frequently asked questions

What is ICD-10 code X31?
X31 is the ICD-10-CM code for "Exposure to excessive natural cold". It falls under V00-Y99 External causes of morbidity.
Is X31 a billable code?
Yes — X31 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from X31?
Excludes1 (not coded here): cold of man-made origin (W93.-); contact with or inhalation of dry ice (W93.-); contact with or inhalation of liquefied gas (W93.-).

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

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