X30.XXXA EXPOSURE TO EXCESSIVE NATURAL HEAT, INITIAL ENCOUNTER

Code Information

Diagnosis Code: X30.XXXA
Short Description: Exposure to excessive natural heat, initial encounter
Long Description: Exposure to excessive natural heat, initial encounter
Code Version: 2025 ICD-10-CM

The code X30.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 heat (X30)

Synonyms

Accident due to hot weather
Exposure to heat
Heat-induced dermatosis
Heatwave

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
X30.XXXA		E900.0	Excessive heat: 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
X30	Exposure to excessive natural heat
X30.XXXD	Exposure to excessive natural heat, subsequent encounter
X30.XXXS	Exposure to excessive natural heat, sequela

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

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