X31.XXXA EXPOSURE TO EXCESSIVE NATURAL COLD, INITIAL ENCOUNTER

Code Information

Diagnosis Code: X31.XXXA
Short Description: Exposure to excessive natural cold, initial encounter
Long Description: Exposure to excessive natural cold, initial encounter
Code Version: 2025 ICD-10-CM

The code X31.XXXA is VALID for claim submission

Code Classification

External causes of morbidity and mortality (V01–Y99)
- Exposure to forces of nature (X30-X39)
  - Exposure to excessive natural cold (X31)

Synonyms

Accident due to cold weather
Accident due to excessive cold
Accident due to excessive cold
Cold wave
Exposure to cold
Hypothermia
Hypothermia caused by cold environment
Injury of unknown intent by extremes of cold
Thrombocytopenia due to hypothermia

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
X31.XXXA		E901.0	Excessive cold: weather

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code	ICD-10 Description
X31	Exposure to excessive natural cold
X31.XXXD	Exposure to excessive natural cold, subsequent encounter
X31.XXXS	Exposure to excessive natural cold, sequela

This page was last updated on: 10/1/2025

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