Non-Billable / Non-Specific Code
ICD-10-CM W90 is the diagnosis code for Exposure to other nonionizing radiation. This code falls under the section "Exposure to electric current, radiation and extreme ambient air temperature and pressure" within Chapter 20 â 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.
The following conditions are not included in W90. If the patient has both, code each condition separately:
Understanding where W90 sits in the ICD-10-CM classification helps ensure proper coding:
No, W90 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
W90 is the ICD-10-CM diagnosis code for "Exposure to other nonionizing radiation". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
W90 is located in Section W85-W99 â "Exposure to electric current, radiation and extreme ambient air temperature and pressure" within Chapter 20 of the ICD-10-CM Tabular List.
W90 has 4 sub-code(s) that provide more specific detail: W90.0, W90.1, W90.2, W90.8.
Use W90 when the patients documented diagnosis matches "Exposure to other nonionizing radiation" 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 other nonionizing radiation is W90.
No, W90 is non-billable. Use a more specific sub-code for primary diagnosis billing.
W90 is in Chapter 20 of the ICD-10-CM Tabular List.
Yes, W90 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.