X35: Volcanic eruption
Codes under X35 (Volcanic eruption). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| X35.XXXA | Volcanic eruption, initial encounter | ✓ |
| X35.XXXA | Volcanic eruption, initial encounter | ✓ |
| X35.XXXD | Volcanic eruption, subsequent encounter | ✓ |
| X35.XXXD | Volcanic eruption, subsequent encounter | ✓ |
| X35.XXXS | Volcanic eruption, sequela | ✓ |
| X35.XXXS | Volcanic eruption, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code X35?
X35 is an ICD-10-CM category covering Volcanic eruption. It contains 6 more specific diagnosis codes, 6 of which are billable.
Is X35 a billable code?
No — X35 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 X35.XXXA — Volcanic eruption, initial encounter). 6 of the 6 codes under X35 are billable.
What codes fall under X35?
X35 includes X35.XXXA, X35.XXXA, X35.XXXD, X35.XXXD, X35.XXXS, plus 1 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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