T70.9XXA Guidelines & Instructional Notes: Effect of air pressure and water pressure, unsp, init encntr

Instruction Source: T70.9XXA

Effect of air pressure and water pressure, unsp, init encntr

Instruction Source: T70.9

Effect of air pressure and water pressure, unspecified

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)

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