Q86: Congenital malformation syndromes due to known exogenous causes, not elsewhere classified
Codes under Q86 (Congenital malformation syndromes due to known exogenous causes, not elsewhere classified). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Q86.0 | Fetal alcohol syndrome (dysmorphic) | ✓ |
| Q86.0 | Fetal alcohol syndrome (dysmorphic) | ✓ |
| Q86.1 | Fetal hydantoin syndrome | ✓ |
| Q86.1 | Fetal hydantoin syndrome | ✓ |
| Q86.2 | Dysmorphism due to warfarin | ✓ |
| Q86.2 | Dysmorphism due to warfarin | ✓ |
| Q86.8 | Other congenital malformation syndromes due to known exogenous causes | ✓ |
| Q86.8 | Other congenital malformation syndromes due to known exogenous causes | ✓ |
Frequently asked questions
What is ICD-10-CM code Q86?
Q86 is an ICD-10-CM category covering Congenital malformation syndromes due to known exogenous causes, not elsewhere classified. It contains 8 more specific diagnosis codes, 8 of which are billable.
Is Q86 a billable code?
No — Q86 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 Q86.0 — Fetal alcohol syndrome (dysmorphic)). 8 of the 8 codes under Q86 are billable.
What codes fall under Q86?
Q86 includes Q86.0, Q86.0, Q86.1, Q86.1, Q86.2, plus 3 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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