Exposure to rapid changes in air pressure during ascent
Requires 7th character
W94.2 requires a 7th character to be reported. Choose a complete code below.
Inclusion terms
Includes (from W94)
- Note: This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.
Excludes1
Not coded here — never report together with this code.
- exposure to: (from W94)
- failure in dosage of radiation or temperature during surgical and medical care (Y63.2-Y63.5) (from W94)
- lightning (T75.0-) (from W94)
- natural cold (X31) (from W94)
- natural heat (X30) (from W94)
- natural radiation NOS (X39) (from W94)
- radiological procedure and radiotherapy (Y84.2) (from W94)
- sunlight (X32) (from W94)
7th character
This code requires a 7th character (defined at W94). Use the placeholder "X" for missing positions.
| Character | Meaning |
|---|---|
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
Parent code
- W94Exposure to high and low air pressure and changes in air pressureNeeds 7th char
More specific codes W94.2
- W94.21Exposure to reduction in atmospheric pressure while surfacing from deep-water divingNeeds 7th char
- W94.22Exposure to reduction in atmospheric pressure while surfacing from undergroundNeeds 7th char
- W94.23Exposure to sudden change in air pressure in aircraft during ascentNeeds 7th char
- W94.29Exposure to other rapid changes in air pressure during ascentNeeds 7th char