Coding and coverage · ICD-10-CM

Q86 Congenital malformation syndromes due to known exogenous causes, not elsewhere classified

Not billable (header)Chapter 17

Report one of the more specific codes below.

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Codes under this one

  • Q86.0 Fetal alcohol syndrome (dysmorphic)
  • Q86.1 Fetal hydantoin syndrome
  • Q86.2 Dysmorphism due to warfarin
  • Q86.8 Other congenital malformation syndromes due to known exogenous causes

Instructional notes

Chapter 17

Excludes2Not included here: the patient may have both; report both when both are present.
  • inborn errors of metabolism (E70-E88)
Notes
  • Codes from this chapter are not for use on maternal records

This code

Excludes2Not included here: the patient may have both; report both when both are present.
  • iodine-deficiency-related hypothyroidism (E00-E02)
  • nonteratogenic effects of substances transmitted via placenta or breast milk (P04.-)

Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1) · Q80-Q89 Other congenital malformations (Q80-Q89)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.