Exposure to forces of nature (X30-X39)

X30Exposure to excessive natural heat
› Exposure to excessive heat as the cause of sunstroke
› Exposure to heat NOS
Excludes 1: excessive heat of man-made origin (W92)
› exposure to man-made radiation (W89)
› exposure to sunlight (X32)
› exposure to tanning bed (W89)
The appropriate 7th character is to be added to code X30
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X31Exposure to excessive natural cold
› Excessive cold as the cause of chilblains NOS
› Excessive cold as the cause of immersion foot or hand
› Exposure to cold NOS
› Exposure to weather conditions
Excludes 1: cold of man-made origin (W93.-)
› contact with or inhalation of dry ice (W93.-)
› contact with or inhalation of liquefied gas (W93.-)
The appropriate 7th character is to be added to code X31
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X32Exposure to sunlight
Excludes 1: man-made radiation (tanning bed) (W89)
Excludes 2: radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
The appropriate 7th character is to be added to code X32
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X34Earthquake
Excludes 2: tidal wave (tsunami) due to earthquake (X37.41)
The appropriate 7th character is to be added to code X34
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X35Volcanic eruption
Excludes 2: tidal wave (tsunami) due to volcanic eruption (X37.41)
The appropriate 7th character is to be added to code X35
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X36Avalanche, landslide and other earth movements
Includes: victim of mudslide of cataclysmic nature
Excludes 1: earthquake (X34)
Excludes 2: transport accident involving collision with avalanche or landslide not in motion (V01-V99)
The appropriate 7th character is to be added to each code from category X36
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X36.0Collapse of dam or man-made structure causing earth movement

X36.1Avalanche, landslide, or mudslide

X37Cataclysmic storm
The appropriate 7th character is to be added to each code from category X37
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X37.0Hurricane
› Storm surge
› Typhoon

X37.1Tornado
› Cyclone
› Twister

X37.2Blizzard (snow)(ice)

X37.3Dust storm

X37.4Tidalwave

X37.41Tidal wave due to earthquake or volcanic eruption
› Tidal wave NOS
› Tsunami

X37.42Tidal wave due to storm

X37.43Tidal wave due to landslide

X37.8Other cataclysmic storms
› Cloudburst
› Torrential rain
Excludes 2: flood (X38)

X37.9Unspecified cataclysmic storm
› Storm NOS
Excludes 1: collapse of dam or man-made structure causing earth movement (X36.0)

X38Flood
› Flood arising from remote storm
› Flood of cataclysmic nature arising from melting snow
› Flood resulting directly from storm
Excludes 1: collapse of dam or man-made structure causing earth movement (X36.0)
› tidal wave NOS (X37.41)
› tidal wave caused by storm (X37.42)
The appropriate 7th character is to be added to code X38
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X39Exposure to other forces of nature
The appropriate 7th character is to be added to each code from category X39
7th Character: A :: initial encounter
› D :: subsequent encounter
› S :: sequela

X39.0Exposure to natural radiation
Excludes 1: contact with and (suspected) exposure to radon and other naturally occurring radiation (Z77.123)
› exposure to man-made radiation (W88-W90)
› exposure to sunlight (X32)

X39.01Exposure to radon

X39.08Exposure to other natural radiation

X39.8Other exposure to forces of nature