Exposure to forces of nature (X30-X39) ICD-10-CM
The X30–X39 section covers exposure to forces of nature with 85 ICD-10-CM diagnosis codes, of which 60 are billable in fiscal year 2027. The section is organized into the 9 code ranges listed below.
Code Ranges in This Section 9 ranges · 85 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the X30–X39 Code Range
These codes describe exposure to natural heat, cold, sunlight, earthquakes, volcanic eruptions, earth movements, severe storms, floods, and other forces of nature.
The categories separate these events by type. X30, X31, and X32 distinguish heat, cold, and sunlight. X34 and X35 identify earthquakes and volcanic eruptions. X36 divides earth movements by type, while X37 divides storms by type. X38 identifies floods. X39 includes natural radiation and other forces of nature.
The encounter character distinguishes an initial encounter (A), subsequent encounter (D), or sequela (S), meaning a later effect.
Questions About This Page
How many codes are in the X30-X39 range?
The X30-X39 range contains 85 ICD-10-CM diagnosis codes in FY 2027. 60 of them are billable, and the rest are category headers that organize the section.
What conditions does X30-X39 cover?
The range covers exposure to forces of nature. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
