DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q51 Congenital malformations of uterus and cervix

  • Header · not billable

Q51 is not billable. The category heads 18 billable codes in FY2027, grouped under 10 subdivisions.

Index → code

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. Q50-Q56 Congenital malformations of genital organs (Q50-Q56)
  3. Q51 Congenital malformations of uterus and cervix
Billable codes
18
Subdivisions
10
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
84

Codes in Q51

  1. Q51.0
    Agenesis and aplasia of uterus
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital absence of uterus
  2. Q51.1
    Doubling of uterus with doubling of cervix and vagina
    Header
  3. Q51.10
    Doubling of uterus with doubling of cervix and vagina without obstruction
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Doubling of uterus with doubling of cervix and vagina NOS
  4. Q51.11
    Doubling of uterus with doubling of cervix and vagina with obstruction
    BillableExempt
  5. Q51.2
    Other doubling of uterus
    Header
    Inclusion terms 2

    Inclusion terms

    • Doubling of uterus NOS
    • Septate uterus
  6. Q51.21
    Complete doubling of uterus
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Complete septate uterus
  7. Q51.22
    Partial doubling of uterus
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Partial septate uterus
  8. Q51.28
    Other and unspecified doubling of uterus
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Septate uterus NOS
  9. Q51.3
    Bicornate uterus
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Bicornate uterus, complete or partial
  10. Q51.4
    Unicornate uterus
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • Unicornate uterus with or without a separate uterine horn
    • Uterus with only one functioning horn
  11. Q51.5
    Agenesis and aplasia of cervix
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital absence of cervix
  12. Q51.6
    Embryonic cyst of cervix
    BillableExempt
  13. Q51.7
    Congenital fistulae between uterus and digestive and urinary tracts
    BillableExempt
  14. Q51.8
    Other congenital malformations of uterus and cervix
    Header
  15. Q51.81
    Other congenital malformations of uterus
    Header
  16. Q51.810
    Arcuate uterus
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Arcuatus uterus
  17. Q51.811
    Hypoplasia of uterus
    BillableExempt
  18. Q51.818
    Other congenital malformations of uterus
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Müllerian anomaly of uterus NEC
  19. Q51.82
    Other congenital malformations of cervix
    Header
  20. Q51.820
    Cervical duplication
    BillableExempt
  21. Q51.821
    Hypoplasia of cervix
    BillableExempt
  22. Q51.828
    Other congenital malformations of cervix
    BillableExempt
  23. Q51.9
    Congenital malformation of uterus and cervix, unspecified
    BillableExempt

Sources of each column.

Instructions

Notes that also apply

Block Q50-Q56 instructions (Excludes1 2): printed on the block page.

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

Index entries

  • Subseptus uterus → Q51.28
  • Bicornate or bicornis uterus → Q51.3
  • Biforis uterus (suprasimplex) → Q51.3
  • Unicornate uterus → Q51.4
  • Arcuate uterus → Q51.810
  • Arcuatus uterus → Q51.810
  • Agenesisuterus → Q51.0
  • Aplasiauterus → Q51.0
  • Accessory (congenital)uterus → Q51.28
  • Doubleuterus → Q51.28
  • Septum, septate (congenital)uterus → Q51.28
  • Supernumerary (congenital)uterus → Q51.28
  • Bifid (congenital)uterus → Q51.3
  • Agenesiscervix → Q51.5
  • Aplasiacervix (congenital) → Q51.5
  • Communicationcongenital between uterus and digestive or urinary tract → Q51.7
  • Fistula (cutaneous)uterourethral → Q51.7
  • Hypoplasia, hypoplasticuterus, congenital → Q51.811
  • Atresia, atreticuterus → Q51.818
  • Rudimentary (congenital)uterus → Q51.818
  • Tripleuteri → Q51.818
  • Doublecervix → Q51.820
  • Duplication, duplexcervix → Q51.820
  • Hypoplasia, hypoplasticcervix (uteri), congenital → Q51.821
  • Elongated, elongation (congenital)cervix (uteri) → Q51.828
  • Frenum, frenulumexternal os → Q51.828
  • Imperforate (congenital)cervix (uteri) → Q51.828
  • Rudimentary (congenital)cervix uteri → Q51.828
  • Valve, valvular (formation)cervix, internal os → Q51.828
  • Anomaly, anomalous (congenital) (unspecified type)cervix → Q51.9
  • Anomaly, anomalous (congenital) (unspecified type)uterus → Q51.9
  • Deformityuterus (congenital) → Q51.9
  • Distortion(s) (congenital)cervix (uteri) → Q51.9
  • Distortion(s) (congenital)uterus → Q51.9
  • Malformation (congenital)cervix uteri → Q51.9
  • Malformation (congenital)uterus → Q51.9
  • Absence (of) (organ or part) (complete or partial)uterus (acquired)congenital → Q51.0
  • Doublecervixwith doubling of uterus (and vagina) → Q51.10
  • Doublevaginawith doubling of uterus (and cervix) → Q51.10
  • Doubleuteruscomplete → Q51.21

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

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

Hierarchy