ICD-10-CM W94: Exposure to high and low air pressure and changes in air pressure

ICD-10-CM Diagnosis Code (2025)

Official Description for W94

Exposure to high and low air pressure and changes in air pressure

Coding Notes & Guidelines for W94

7th Character Guidance

The appropriate 7th character is to be added to each code from category W94

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for W94):

W94.0 - Exposure to prolonged high air pressure W94.1 - Exposure to prolonged low air pressure W94.11 - Exposure to residence or prolonged visit at high altitude W94.12 - Exposure to other prolonged low air pressure W94.2 - Exposure to rapid changes in air pressure during ascent W94.21 - Exposure to reduction in atmospheric pressure while surfacing from deep-water diving W94.22 - Exposure to reduction in atmospheric pressure while surfacing from underground W94.23 - Exposure to sudden change in air pressure in aircraft during ascent W94.29 - Exposure to other rapid changes in air pressure during ascent W94.3 - Exposure to rapid changes in air pressure during descent W94.31 - Exposure to sudden change in air pressure in aircraft during descent W94.32 - Exposure to high air pressure from rapid descent in water W94.39 - Exposure to other rapid changes in air pressure during descent

About ICD-10-CM Code W94 (Exposure to high and low air pressure and changes in air pressure)

ICD-10-CM code W94 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM W94 became effective on October 1, 2024.

This page provides detailed information about W94 - Exposure to high and low air pressure and changes in air pressure. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Exposure to high and low air pressure and changes in air pressure.