Q86
Congenital malformation syndromes due to known exogenous causes, not elsewhere classified
Q86 is a non-billable ICD-10-CM code category for congenital malformation syndromes due to known exogenous causes, not elsewhere classified. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Q86.0 Fetal alcohol syndrome (dysmorphic), Q86.1 Fetal hydantoin syndrome, Q86.2 Dysmorphism due to warfarin and Q86.8 Other congenital malformation syndromes due to known exogenous causes. Its coding notes include 3 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- iodine-deficiency-related hypothyroidism (E00-E02)
- nonteratogenic effects of substances transmitted via placenta or breast milk (P04.-)
Also from chapter/block level (1 note)
- inborn errors of metabolism (E70-E88)
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are not for use on maternal records