ICD-10-CM 2027
ICD-10 code for vein hypoplasia
From the official ICD-10-CM alphabetic index entry “Hypoplasia, hypoplastic › vein (s) (peripheral)”. Page updated September 29, 2026.
About coding vein hypoplasia
The ICD-10-CM code for vein hypoplasia is Q27.8 (Other specified congenital malformations of peripheral vascular system). The official index lists 6 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Q27.8.
Within Q27, choose Q27.8 (Other specified congenital malformations of peripheral vascular system) only when documentation doesn't support a more specific option: congenital absence and hypoplasia of umbilical artery (Q27.0), congenital renal artery stenosis (Q27.1), other congenital malformations of renal artery (Q27.2), arteriovenous malformation (peripheral) (Q27.3), congenital phlebectasia (Q27.4) and congenital malformation of peripheral vascular system, unspecified (Q27.9).
Don't report Q27.8 together with the conditions in its Excludes1 note: arteriovenous malformation (Q27.3-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific vein hypoplasia codes (official index)
- brain Q28.3 — Other malformations of cerebral vessels
- digestive system Q27.8 — Other specified congenital malformations of peripheral vascular system
- great Q26.8 — Other congenital malformations of great veins
- lower limb Q27.8 — Other specified congenital malformations of peripheral vascular system
- specified site NEC Q27.8 — Other specified congenital malformations of peripheral vascular system
- upper limb Q27.8 — Other specified congenital malformations of peripheral vascular system
Don't confuse with (Excludes1 for Q27.8)
- arteriovenous malformation (Q27.3-)
Common questions about vein hypoplasia ICD-10 codes
What is the ICD-10 code for vein hypoplasia?
- Q27.8 — Other specified congenital malformations of peripheral vascular system. More specific codes apply when the documentation supports them: Q28.3, Q27.8, Q26.8, Q27.8 and others below.
What is the ICD-10 code for brain vein hypoplasia?
- Q28.3 — Other malformations of cerebral vessels.
What is the ICD-10 code for digestive system vein hypoplasia?
- Q27.8 — Other specified congenital malformations of peripheral vascular system.
What is the ICD-10 code for great vein hypoplasia?
- Q26.8 — Other congenital malformations of great veins.
What is the ICD-10 code for lower limb vein hypoplasia?
- Q27.8 — Other specified congenital malformations of peripheral vascular system.
What is the ICD-10 code for upper limb vein hypoplasia?
- Q27.8 — Other specified congenital malformations of peripheral vascular system.
Is Q27.8 billable?
- Yes. Q27.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q27.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q27.8 as a principal diagnosis.
Is Q27.8 a CC or MCC?
- No. Q27.8 is neither a CC nor an MCC under MS-DRG v44.0.