W88: Exposure to ionizing radiation
Codes under W88 (Exposure to ionizing radiation). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| W88.0 | Exposure to X-rays | — |
| W88.0 | Exposure to X-rays | — |
| W88.0XXA | Exposure to X-rays, initial encounter | ✓ |
| W88.0XXA | Exposure to X-rays, initial encounter | ✓ |
| W88.0XXD | Exposure to X-rays, subsequent encounter | ✓ |
| W88.0XXD | Exposure to X-rays, subsequent encounter | ✓ |
| W88.0XXS | Exposure to X-rays, sequela | ✓ |
| W88.0XXS | Exposure to X-rays, sequela | ✓ |
| W88.1 | Exposure to radioactive isotopes | — |
| W88.1 | Exposure to radioactive isotopes | — |
| W88.1XXA | Exposure to radioactive isotopes, initial encounter | ✓ |
| W88.1XXA | Exposure to radioactive isotopes, initial encounter | ✓ |
| W88.1XXD | Exposure to radioactive isotopes, subsequent encounter | ✓ |
| W88.1XXD | Exposure to radioactive isotopes, subsequent encounter | ✓ |
| W88.1XXS | Exposure to radioactive isotopes, sequela | ✓ |
| W88.1XXS | Exposure to radioactive isotopes, sequela | ✓ |
| W88.8 | Exposure to other ionizing radiation | — |
| W88.8 | Exposure to other ionizing radiation | — |
| W88.8XXA | Exposure to other ionizing radiation, initial encounter | ✓ |
| W88.8XXA | Exposure to other ionizing radiation, initial encounter | ✓ |
| W88.8XXD | Exposure to other ionizing radiation, subsequent encounter | ✓ |
| W88.8XXD | Exposure to other ionizing radiation, subsequent encounter | ✓ |
| W88.8XXS | Exposure to other ionizing radiation, sequela | ✓ |
| W88.8XXS | Exposure to other ionizing radiation, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code W88?
W88 is an ICD-10-CM category covering Exposure to ionizing radiation. It contains 24 more specific diagnosis codes, 18 of which are billable.
Is W88 a billable code?
No — W88 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example W88.0 — Exposure to X-rays). 18 of the 24 codes under W88 are billable.
What codes fall under W88?
W88 includes W88.0, W88.0, W88.0XXA, W88.0XXA, W88.0XXD, plus 19 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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