Q27.9
Congenital malformation of peripheral vascular system, unspecified
Q27.9 (also written Q279) is a billable ICD-10-CM diagnosis code for congenital malformation of peripheral vascular system, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 12 codes in category Q27 (Other congenital malformations of peripheral vascular system). The Alphabetic Index lists it under 16 entries. Its coding notes include 6 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- inborn errors of metabolism (E70-E88)
Inclusion terms
Conditions classified to this code.
- Anomaly of artery or vein NOS
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are not for use on maternal records
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 16 entries
- Accessory (congenital), blood vessels NEC
- Agenesis, artery (peripheral)
- Agenesis, vein (s) (peripheral)
- Anomaly, anomalous (congenital) (unspecified type), artery (peripheral)
- Anomaly, anomalous (congenital) (unspecified type), artery (peripheral), peripheral
- Anomaly, anomalous (congenital) (unspecified type), capillary
- Anomaly, anomalous (congenital) (unspecified type), peripheral vascular system
- Anomaly, anomalous (congenital) (unspecified type), vascular
- Anomaly, anomalous (congenital) (unspecified type), vein (s) (peripheral)
- Anomaly, anomalous (congenital) (unspecified type), vessel (s)
- Defect, defective, vascular (local), congenital
- Deformity, artery (congenital) (peripheral) NOS