ICD-10-CM X31 is the diagnosis code for Exposure to excessive natural cold. This code falls under the section "Exposure to forces of nature" within Chapter 20 — External causes of morbidity (V00-Y99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as X31. They are mutually exclusive:
Understanding where X31 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, X31 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
X31 is the ICD-10-CM diagnosis code for "Exposure to excessive natural cold". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
X31 is located in Section X30-X39 — "Exposure to forces of nature" within Chapter 20 of the ICD-10-CM Tabular List.
Use X31 when the patients documented diagnosis matches "Exposure to excessive natural cold" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Exposure to excessive natural cold is X31.
Yes, X31 can be used as a primary diagnosis code since it is billable and specific.
X31 is in Chapter 20 of the ICD-10-CM Tabular List.
Type 1 Excludes for X31 include: cold of man-made origin (W93.-); contact with or inhalation of dry ice (W93.-); contact with or inhalation of liquefied gas (W93.-).
Yes, X31 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.