Exposure to excessive cold of man-made origin (W93) ICD-10-CM
The W93 code range covers exposure to excessive cold of man-made origin with 27 ICD-10-CM diagnosis codes. 18 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category W93
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the W93 Range 27 codes · 18 billable
- W93 Exposure to excessive cold of man-made originNon-billable
- W93.0 Contact with or inhalation of dry iceNon-billable
- W93.01 Contact with dry iceNon-billable
- W93.01XA Contact with dry ice, initial encounter
- W93.01XD Contact with dry ice, subsequent encounter
- W93.01XS Contact with dry ice, sequela
- W93.02 Inhalation of dry iceNon-billable
- W93.02XA Inhalation of dry ice, initial encounter
- W93.02XD Inhalation of dry ice, subsequent encounter
- W93.02XS Inhalation of dry ice, sequela
- W93.1 Contact with or inhalation of liquid airNon-billable
- W93.11 Contact with liquid airNon-billable
- W93.11XA Contact with liquid air, initial encounter
- W93.11XD Contact with liquid air, subsequent encounter
- W93.11XS Contact with liquid air, sequela
- W93.12 Inhalation of liquid airNon-billable
- W93.12XA Inhalation of liquid air, initial encounter
- W93.12XD Inhalation of liquid air, subsequent encounter
- W93.12XS Inhalation of liquid air, sequela
- W93.2 Prolonged exposure in deep freeze unit or refrigeratorNon-billable
- W93.2XXA Prolonged exposure in deep freeze unit or refrigerator, initial encounter
- W93.2XXD Prolonged exposure in deep freeze unit or refrigerator, subsequent encounter
- W93.2XXS Prolonged exposure in deep freeze unit or refrigerator, sequela
- W93.8 Exposure to other excessive cold of man-made originNon-billable
- W93.8XXA Exposure to other excessive cold of man-made origin, initial encounter
- W93.8XXD Exposure to other excessive cold of man-made origin, subsequent encounter
- W93.8XXS Exposure to other excessive cold of man-made origin, sequela
About the W93 Code Range
These codes describe exposure to excessive cold from man-made sources, including dry ice, liquid air, and deep freeze units or refrigerators.
W93.0 separates contact with dry ice from inhalation of it. W93.1 makes the same distinction for liquid air. W93.2 describes prolonged exposure in a deep freeze unit or refrigerator, while W93.8 describes other man-made sources of excessive cold. The seventh character distinguishes an initial encounter (A), subsequent encounter (D), or sequela (S).
Questions About This Page
How many billable codes are in the W93 range?
Of the 27 codes in this range, 18 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the W93 range classify?
The range classifies exposure to excessive cold of man-made origin. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
