Q87.40 – Marfan syndrome, unspecified
ICD-10-CM 2027 diagnosis code · Other congenital malformations
ICD-10-CM code
Q87.40
- Code
Q87.40(claims format:Q8740)- Description
- Marfan syndrome, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- Block
- Q80-Q89 Other congenital malformations
- Parent codes
- Q87 › Q87.4
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Q87 – Other specified congenital malformation syndromes affecting multiple systems
Use additional code:
- code(s) to identify all associated manifestations
Index terms for Q87.40
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in Q87.4
Frequently asked questions
What is ICD-10 code Q87.40?
Q87.40 is the ICD-10-CM code for marfan syndrome, unspecified, in the block Q80-Q89 (Other congenital malformations).
Is Q87.40 a billable code?
Yes. Q87.40 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does Q87.40 belong to?
It belongs to category Q87 – Other specified congenital malformation syndromes affecting multiple systems.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.