Q86 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Congenital malformation syndromes due to known exogenous causes, not elsewhere classified.
Type 2 excludes
Iodine-deficiency-related hypothyroidism (E00-E02)
Nonteratogenic effects of substances transmitted via placenta or breast milk (P04.-)
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