Q86Header code — not billable
Congenital malformation syndromes due to known exogenous causes, not elsewhere classified
Short description: Congen malform syndromes due to known exogenous causes, NEC
- Chapter
- 17. Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q86
- Effective date
- October 1, 2026
Related codes in category Q86
Frequently asked questions
What is ICD-10 code Q86?
Q86 is an ICD-10-CM diagnosis code for Congenital malformation syndromes due to known exogenous causes, not elsewhere classified.
Is Q86 a billable code?
No. Q86 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is Q86 in?
Q86 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.
When did Q86 become effective?
Q86 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Q86?
Q86 belongs to category Q86, which includes 4 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.