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to forces of nature (X30-X39)=
X30 Exposure to excessive natural heat
- Includes: exposure to excessive heat as the cause of sunstroke
- exposure to heat NOS
- Excludes1: 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
- A initial encounter
- D subsequent encounter
- S sequela
X31 Exposure to excessive natural cold
- Includes: 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
- Excludes1: cold of man-made origin (W93.-)
- contact with or inhalation of:
- dry ice (W93.-)
- liquefied gas (W93.-)
- The appropriate 7th character is to be added to code X31
- A initial encounter
- D subsequent encounter
- S sequela
X32 Exposure to sunlight
- Excludes1: radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
- man-made radiation (tanning bed) (W89)
- The appropriate 7th character is to be added to code X32
- A initial encounter
- D subsequent encounter
- S sequela
X34 Earthquake
- Excludes2: tidal wave (tsunami) due to earthquake (X37.41)
- The appropriate 7th character is to be added to code X34
- A initial encounter
- D subsequent encounter
- S sequela
X35 Volcanic eruption
- Excludes2: tidal wave (tsunami) due to volcanic eruption (X37.41)
