Q86.8 ICD-10-CA code: Other congenital malformation syndromes due to known exogenous causes
Q86.8 is the ICD-10-CA code for “Other congenital malformation syndromes due to known exogenous causes” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Q86.8Other congenital malformation syndromes due to known exogenous causes
Short description: Oth congen malform syndr dt exog cause
ICD-10-CA · Canada · Also written Q868
Index terms
Entries in CIHI’s alphabetical index that lead to Q86.8. Searching the index by the condition the note names is how coders reach this code.
- Dysmorphism (due to), exogenous cause NEC
- Syndrome, malformation, congenital, due to, exogenous cause NEC
Notes for Q86.8
As CIHI prints them, with any note Q86.8 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Iodine-deficiency-related hypothyroidism (E00-E02)nonteratogenic effects of substances transmitted via placenta or breast milk (P04.-)From Q86 Congenital malformation syndromes due to known exogenous causes, not elsewhere classified
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q86.8 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q80-Q89Other congenital malformations
- 3Category Q86Congenital malformation syndromes due to known exogenous causes, not elsewhere classified
- 4Valid code Q86.8Other congenital malformation syndromes due to known exogenous causes
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code Q86.8 mean?
Q86.8 is the ICD-10-CA code for “Other congenital malformation syndromes due to known exogenous causes” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Q86.8 in ICD-10-CA?
Q86.8 sits under Q86 Congenital malformation syndromes due to known exogenous causes, not elsewhere classified, within Q80-Q89 Other congenital malformations, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
What coding notes apply to Q86.8?
ICD-10-CA lists Excludes notes for Q86.8, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.