DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q27 Other congenital malformations of peripheral vascular system

  • Header · not billable

Q27 is not billable. The category heads 12 billable codes in FY2027, grouped under 7 subdivisions.

Index → code

  • Distribution vessel, atypical → Q27.9
  • Phlebectasiacongenital → Q27.4
  • Singleumbilical artery → Q27.0

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. Q20-Q28 Congenital malformations of the circulatory system (Q20-Q28)
  3. Q27 Other congenital malformations of peripheral vascular system
Billable codes
12
Subdivisions
7
CC / MCC codes
2 / 0
HCC V28 codes
0
New FY2027
0
Index entries
145

Codes in Q27

  1. Q27.0
    Congenital absence and hypoplasia of umbilical artery
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Single umbilical artery
  2. Q27.1
    Congenital renal artery stenosis
    BillableExempt
  3. Q27.2
    Other congenital malformations of renal artery
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • Congenital malformation of renal artery NOS
    • Multiple renal arteries
  4. Q27.3
    Arteriovenous malformation (peripheral)
    Header
    Inclusion terms 1, Excludes1 1, Excludes2 2

    Inclusion terms

    • Arteriovenous aneurysm

    Excludes1

    • acquired arteriovenous aneurysm (I77.0) I77.0

    Excludes2

    • arteriovenous malformation of cerebral vessels (Q28.2) Q28.2
    • arteriovenous malformation of precerebral vessels (Q28.0) Q28.0
  5. Q27.30
    Arteriovenous malformation, site unspecified
    BillableCCExempt
  6. Q27.31
    Arteriovenous malformation of vessel of upper limb
    BillableExempt
  7. Q27.32
    Arteriovenous malformation of vessel of lower limb
    BillableExempt
  8. Q27.33
    Arteriovenous malformation of digestive system vessel
    BillableExempt
  9. Q27.34
    Arteriovenous malformation of renal vessel
    BillableExempt
  10. Q27.39
    Arteriovenous malformation, other site
    BillableExempt
  11. Q27.4
    Congenital phlebectasia
    BillableCCExempt
  12. Q27.8
    Other specified congenital malformations of peripheral vascular system
    BillableExempt
    Inclusion terms 5, Excludes1 1

    Inclusion terms

    • Absence of peripheral vascular system
    • Atresia of peripheral vascular system
    • Congenital aneurysm (peripheral)
    • Congenital stricture, artery
    • Congenital varix

    Excludes1

    • arteriovenous malformation (Q27.3-) Q27.3
  13. Q27.9
    Congenital malformation of peripheral vascular system, unspecified
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Anomaly of artery or vein NOS

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At Q27

Excludes2

  • anomalies of cerebral and precerebral vessels (Q28.0-Q28.3) Q28.0 Q28.3
  • anomalies of coronary vessels (Q24.5) Q24.5
  • anomalies of pulmonary artery (Q25.5-Q25.7) Q25.5 Q25.7
  • congenital retinal aneurysm (Q14.1) Q14.1
  • hemangioma and lymphangioma (D18.-) D18

Notes that also apply

Chapter 17 instructions (Notes 1, Excludes2 1): printed on the chapter 17 page.

Index entries

  • Distribution vessel, atypical → Q27.9
  • Absence (of) (organ or part) (complete or partial)umbilical artery, congenital → Q27.0
  • Anomaly, anomalous (congenital) (unspecified type)umbilical artery → Q27.0
  • Artery, arterialsingle umbilical → Q27.0
  • Hypoplasia, hypoplasticumbilical artery → Q27.0
  • Singleumbilical artery → Q27.0
  • Accessory (congenital)renal arteries (multiple) → Q27.2
  • Malformation (congenital)renal artery → Q27.2
  • Malformation (congenital)arteriovenous, aneurysmatic (congenital) → Q27.30
  • Phlebectasiacongenital → Q27.4
  • Aberrant (congenital)artery (peripheral) → Q27.8
  • Aberrant (congenital)subclavian artery → Q27.8
  • Aberrant (congenital)vein (peripheral) NEC → Q27.8
  • Absence (of) (organ or part) (complete or partial)artery (congenital) (peripheral) → Q27.8
  • Absence (of) (organ or part) (complete or partial)vein (peripheral) congenital NEC → Q27.8
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular)congenital (peripheral) → Q27.8
  • Atresia, atreticartery NEC → Q27.8
  • Atresia, atreticvascular NEC → Q27.8
  • Atresia, atreticvein NEC → Q27.8
  • Hypoplasia, hypoplasticartery (peripheral) → Q27.8
  • Hypoplasia, hypoplasticperipheral vascular system → Q27.8
  • Hypoplasia, hypoplasticvascular NEC peripheral → Q27.8
  • Hypoplasia, hypoplasticvein(s) (peripheral) → Q27.8
  • Varix (lower limb)congenital (any site) → Q27.8
  • Accessory (congenital)blood vessels NEC → Q27.9
  • Agenesisartery (peripheral) → Q27.9
  • Agenesisvein(s) (peripheral) → Q27.9
  • Anomaly, anomalous (congenital) (unspecified type)artery (peripheral) → Q27.9
  • Anomaly, anomalous (congenital) (unspecified type)capillary → Q27.9
  • Anomaly, anomalous (congenital) (unspecified type)peripheral vascular system → Q27.9
  • Anomaly, anomalous (congenital) (unspecified type)vascular → Q27.9
  • Anomaly, anomalous (congenital) (unspecified type)vein(s) (peripheral) → Q27.9
  • Anomaly, anomalous (congenital) (unspecified type)vessel(s) → Q27.9
  • Deformityartery (congenital) (peripheral) NOS → Q27.9
  • Deformityvein (congenital) → Q27.9
  • Malformation (congenital)peripheral vascular system → Q27.9
  • Malformation (congenital)vascular system, peripheral → Q27.9
  • Absence (of) (organ or part) (complete or partial)artery (congenital) (peripheral)umbilical → Q27.0
  • Agenesisartery (peripheral)umbilical → Q27.0
  • Anomaly, anomalous (congenital) (unspecified type)artery (peripheral)umbilical → Q27.0

105 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy