Non-Billable / Non-Specific Code
ICD-10-CM W94.2 is the diagnosis code for Exposure to rapid changes in air pressure during ascent. This code falls under the section "Exposure to electric current, radiation and extreme ambient air temperature and pressure" within Chapter 20 — External causes of morbidity (V00-Y99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where W94.2 sits in the ICD-10-CM classification helps ensure proper coding:
No, W94.2 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
W94.2 is the ICD-10-CM diagnosis code for "Exposure to rapid changes in air pressure during ascent". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of W94.2 is W94 ("Exposure to high and low air pressure and changes in air pressure"). W94.2 provides a more specific classification within this category.
W94.2 is located in Section W85-W99 — "Exposure to electric current, radiation and extreme ambient air temperature and pressure" within Chapter 20 of the ICD-10-CM Tabular List.
W94.2 has 4 sub-code(s) that provide more specific detail: W94.21, W94.22, W94.23, W94.29.
Use W94.2 when the patients documented diagnosis matches "Exposure to rapid changes in air pressure during ascent" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Exposure to rapid changes in air pressure during ascent is W94.2.
No, W94.2 is non-billable. Use a more specific sub-code for primary diagnosis billing.
W94.2 is in Chapter 20 of the ICD-10-CM Tabular List.
Yes, W94.2 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.