DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q64 Other congenital malformations of urinary system

  • Header · not billable

Q64 is not billable. The category heads 22 billable codes in FY2027, grouped under 10 subdivisions.

Index → code

  • Acystia → Q64.5
  • Paraurethral duct → Q64.79
  • Epispadias (female) (male) → Q64.0

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. Q60-Q64 Congenital malformations of the urinary system (Q60-Q64)
  3. Q64 Other congenital malformations of urinary system
Billable codes
22
Subdivisions
10
CC / MCC codes
9 / 0
HCC V28 codes
0
New FY2027
0
Index entries
117

Codes in Q64

  1. Q64.0
    Epispadias
    BillableExempt
    Excludes1 1

    Excludes1

    • hypospadias (Q54.-) Q54
  2. Q64.1
    Exstrophy of urinary bladder
    Header
  3. Q64.10
    Exstrophy of urinary bladder, unspecified
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • Ectopia vesicae
  4. Q64.11
    Supravesical fissure of urinary bladder
    BillableCCExempt
  5. Q64.12
    Cloacal exstrophy of urinary bladder
    BillableCCExempt
  6. Q64.19
    Other exstrophy of urinary bladder
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • Extroversion of bladder
  7. Q64.2
    Congenital posterior urethral valves
    BillableCCExempt
  8. Q64.3
    Other atresia and stenosis of urethra and bladder neck
    Header
  9. Q64.31
    Congenital bladder neck obstruction
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital obstruction of vesicourethral orifice
  10. Q64.32
    Congenital stricture of urethra
    BillableCCExempt
  11. Q64.33
    Congenital stricture of urinary meatus
    BillableCCExempt
  12. Q64.39
    Other atresia and stenosis of urethra and bladder neck
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • Atresia and stenosis of urethra and bladder neck NOS
  13. Q64.4
    Malformation of urachus
    BillableExempt
    Inclusion terms 3

    Inclusion terms

    • Cyst of urachus
    • Patent urachus
    • Prolapse of urachus
  14. Q64.5
    Congenital absence of bladder and urethra
    BillableExempt
  15. Q64.6
    Congenital diverticulum of bladder
    BillableExempt
  16. Q64.7
    Other and unspecified congenital malformations of bladder and urethra
    Header
    Excludes1 1

    Excludes1

    • congenital prolapse of bladder (mucosa) (Q79.4) Q79.4
  17. Q64.70
    Unspecified congenital malformation of bladder and urethra
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Malformation of bladder or urethra NOS
  18. Q64.71
    Congenital prolapse of urethra
    BillableExempt
  19. Q64.72
    Congenital prolapse of urinary meatus
    BillableExempt
  20. Q64.73
    Congenital urethrorectal fistula
    BillableExempt
  21. Q64.74
    Double urethra
    BillableExempt
  22. Q64.75
    Double urinary meatus
    BillableExempt
  23. Q64.79
    Other congenital malformations of bladder and urethra
    BillableExempt
  24. Q64.8
    Other specified congenital malformations of urinary system
    BillableExempt
  25. Q64.9
    Congenital malformation of urinary system, unspecified
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • Congenital anomaly NOS of urinary system
    • Congenital deformity NOS of urinary system

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

Notes that also apply

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

Index entries

  • Epispadias (female) (male) → Q64.0
  • Acystia → Q64.5
  • Paramedial urethrovesical orifice → Q64.79
  • Paraurethral duct → Q64.79
  • Ectopic, ectopia (congenital)bladder → Q64.10
  • Ectopic, ectopia (congenital)vesicae → Q64.10
  • Exstrophybladder → Q64.10
  • Extroversionbladder → Q64.19
  • Valve, valvular (formation)urethra (congenital) (posterior) → Q64.2
  • Atresia, atreticvesicourethral orifice → Q64.31
  • Stenosis, stenotic (cicatricial)vesicourethral orifice → Q64.31
  • Atresia, atreticmeatus urinarius → Q64.33
  • Stenosis, stenotic (cicatricial)urinary meatus, congenital → Q64.33
  • Atresia, atreticbladder (neck) → Q64.39
  • Atresia, atreticurethra (valvular) → Q64.39
  • Imperforate (congenital)urethra → Q64.39
  • Impervious (congenital)urethra → Q64.39
  • Anomaly, anomalous (congenital) (unspecified type)urachus → Q64.4
  • Cyst (colloid) (mucous) (simple) (retention)allantoic → Q64.4
  • Cyst (colloid) (mucous) (simple) (retention)urachus, congenital → Q64.4
  • Deformityurachus, congenital → Q64.4
  • Fistula (cutaneous)urachus, congenital → Q64.4
  • Patenturachus → Q64.4
  • Persistence, persistent (congenital)umbilical sinus → Q64.4
  • Persistence, persistent (congenital)urachus → Q64.4
  • Prolapse, prolapsedurachus, congenital → Q64.4
  • Remnanturachus → Q64.4
  • Sinusurachus → Q64.4
  • Urachuspatent or persistent → Q64.4
  • Absence (of) (organ or part) (complete or partial)urethra, congenital → Q64.5
  • Agenesisbladder → Q64.5
  • Agenesisurethra → Q64.5
  • Anomaly, anomalous (congenital) (unspecified type)bladder → Q64.70
  • Anomaly, anomalous (congenital) (unspecified type)urethra → Q64.70
  • Bifurcation (congenital)urethra → Q64.74
  • Doubleurethra → Q64.74
  • Doublemeatus urinarius → Q64.75
  • Doubleurinary meatus → Q64.75
  • Accessory (congenital)bladder → Q64.79
  • Accessory (congenital)urethra → Q64.79

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

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

Hierarchy