Congenital malformation syndromes due to known exogenous causes, not elsewhere classified
In Other congenital malformations (Q80-Q89), chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities
4 billable codes under Q86: none are a CC or MCC; none map to an HCC.
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Instructional notes
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Assign Q00-QA1 codes for documented congenital anomalies or genetic disorders at any age, coding non-inherent manifestations separately and sequencing Z38 first on the birth admission.
All codes under Q86
Q86 can't be used on a claim. Pick a billable code below; grey headings group them.
Q86 MS-DRG
As the principal diagnosis, all 4 billable codes under Q86 group to MS-DRG 794 (v44.0).
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Birth Defects
A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.
Read more about birth defects on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.