Q25.46 – Tortuous aortic arch

ICD-10-CM 2027 diagnosis code · Congenital malformations of the circulatory system

Billable code

ICD-10-CM code Q25.46

Code: Q25.46 (claims format: Q2546)
Description: Tortuous aortic arch
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: Q20-Q28 Congenital malformations of the circulatory system
Parent codes: Q25 › Q25.4

Notes for Q25.46

Applicable to:

Persistent convolutions of aortic arch

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Q25.4 – Other congenital malformations of aorta

Excludes1 (not coded here):

hypoplasia of aorta in hypoplastic left heart syndrome (Q23.4)

Index terms for Q25.46

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in Q25.4

Q25.40 – Congenital malformation of aorta unspecifiedBillable
Q25.41 – Absence and aplasia of aortaBillable
Q25.42 – Hypoplasia of aortaBillable
Q25.43 – Congenital aneurysm of aortaBillable
Q25.44 – Congenital dilation of aortaBillable
Q25.45 – Double aortic archBillable
Q25.47 – Right aortic archBillable
Q25.48 – Anomalous origin of subclavian arteryBillable
Q25.49 – Other congenital malformations of aortaBillable

Frequently asked questions

What is ICD-10 code Q25.46?

Q25.46 is the ICD-10-CM code for tortuous aortic arch, in the block Q20-Q28 (Congenital malformations of the circulatory system).

Is Q25.46 a billable code?

Yes. Q25.46 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Q25.46 belong to?

It belongs to category Q25 – Congenital malformations of great arteries.

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.