Q28 is the authoritative medical code for Code Q28. This classification is used in medical billing and clinical recording to specify the clinical criteria for code q28 (ICD-10-CM Q28), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Other congenital malformations of circulatory system is a non-billable ICD-10-CM category code Q28. A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): congenital aneurysm NOS Q27.8; congenital coronary aneurysm Q24.5; ruptured cerebral arteriovenous malformation I60.8; ruptured malformation of precerebral vessels I72.0. Excludes2 (not included here): congenital peripheral aneurysm Q27.8; congenital pulmonary aneurysm Q25.79; congenital retinal aneurysm Q14.1.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Q28 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- congenital aneurysm NOS Q27.8
- congenital coronary aneurysm Q24.5
- ruptured cerebral arteriovenous malformation I60.8
- ruptured malformation of precerebral vessels I72.0
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- congenital peripheral aneurysm Q27.8
- congenital pulmonary aneurysm Q25.79
- congenital retinal aneurysm Q14.1
Frequently Asked Questions (FAQ) & Clinical Guidance
Can Q28 be billed directly?
No. Q28 (Code Q28) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with Q28?
Per Excludes1 instructions, Q28 must not be reported with: congenital aneurysm NOS (Q27.8); congenital coronary aneurysm (Q24.5); ruptured cerebral arteriovenous malformation (I60.8); ruptured malformation of precerebral vessels (I72.0).
Can Q28 be reported alongside related conditions?
Per Excludes2 instructions, Q28 and the following may both be reported when both are present: congenital peripheral aneurysm (Q27.8); congenital pulmonary aneurysm (Q25.79); congenital retinal aneurysm (Q14.1).
Codes in This Family (6)
Official ICD-10-CM classifications in the same code family as Q28, with their registry titles.
- Q28.0 — Arteriovenous malformation of precerebral vessels
- Q28.1 — Other malformations of precerebral vessels
- Q28.2 — Arteriovenous malformation of cerebral vessels
- Q28.3 — Other malformations of cerebral vessels
- Q28.8 — Other specified congenital malformations of circulatory system
- Q28.9 — Congenital malformation of circulatory system, unspecified
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code Q23
Congenital malformations of aortic and mitral valves
ICD Code Q27
Other congenital malformations of peripheral vascular system
ICD Code Q32
Congenital malformations of trachea and bronchus