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W94.21XSBillableSave

W94.21XS - Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, sequela

ICD-10-CM Chapter 20: External causes of morbidity · W85-W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99) · Subcategory of W94.21 · FY2027

7th character S: sequela

Coding Guidance

7th character S: sequela.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom W85-W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99)

Mutually exclusive: these conditions are never reported together with this code.

  • exposure to:
  • failure in dosage of radiation or temperature during surgical and medical care (Y63.2-Y63.5)
  • lightning (T75.0-)
  • natural cold (X31)
  • natural heat (X30)
  • natural radiation NOS (X39)
  • radiological procedure and radiotherapy (Y84.2)
  • sunlight (X32)
NotesFrom Chapter V00-Y99

Instructional notes from the ICD-10-CM tabular list.

  • 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.