Q28.1 – Other malformations of precerebral vessels
ICD-10-CM 2027 diagnosis code · Congenital malformations of the circulatory system
- Code
Q28.1(claims format:Q281)- Description
- Other malformations of precerebral vessels
- 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
- Q28
Notes for Q28.1
- Congenital malformation of precerebral vessels NOS
- Congenital precerebral aneurysm (nonruptured)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Q28 – Other congenital malformations of circulatory system
Index terms for Q28.1
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Absence, vein, precerebral
- Aberrant, artery, vertebral
- Aberrant, vein, precerebral
- Aberrant, artery, basilar NEC
- Aberrant, artery, precerebral
- Aneurysm, precerebral, congenital
- Malformation, precerebral vessels
- Anomaly, anomalous, precerebral vessel
- Anomaly, anomalous, artery, basilar NEC
- Anomaly, anomalous, vessel, precerebral
- Anomaly, anomalous, artery, vertebral NEC
- Dissection, precerebral artery, congenital
- Distribution vessel, atypical, precerebral
- Dissection, artery, precerebral, congenital
Related codes in Q28
- Q28.0 – Arteriovenous malformation of precerebral vesselsBillable
- Q28.2 – Arteriovenous malformation of cerebral vesselsBillable
- Q28.3 – Other malformations of cerebral vesselsBillable
- Q28.8 – Other specified congenital malformations of circulatory systemBillable
- Q28.9 – Congenital malformation of circulatory system, unspecifiedBillable
Frequently asked questions
What is ICD-10 code Q28.1?
Q28.1 is the ICD-10-CM code for other malformations of precerebral vessels, in the block Q20-Q28 (Congenital malformations of the circulatory system).
Is Q28.1 a billable code?
Yes. Q28.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does Q28.1 belong to?
It belongs to category Q28 – Other congenital malformations of circulatory system.
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.