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T70.20XD

Unspecified effects of high altitude, subsequent encounter

Instruction Source: T70.20XD

Unspecified effects of high altitude, subsequent encounter

Instruction Source: T70.20

Unspecified effects of high altitude

Instruction Source: T70.2

Other and unspecified effects of high altitude

Excludes 2 (Not Included Here)

  • polycythemia due to high altitude (D75.1)
Instruction Source: T70

Effects of air pressure and water pressure

Instruction Source: T66-T78

Other and unspecified effects of external causes (T66-T78)

Instruction Source: S00-T88

Injury, poisoning and certain other consequences of external causes

Excludes 2 (Not Included Here)

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)

Clinical Notes

  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
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