DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q55 Other congenital malformations of male genital organs

  • Header · not billable

Q55 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. Q55 Other congenital malformations of male genital organs
Billable codes
18
Subdivisions
10
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
134

Codes in Q55

  1. Q55.0
    Absence and aplasia of testis
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Monorchism
  2. Q55.1
    Hypoplasia of testis and scrotum
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Fusion of testes
  3. Q55.2
    Other and unspecified congenital malformations of testis and scrotum
    Header
  4. Q55.20
    Unspecified congenital malformations of testis and scrotum
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital malformation of testis or scrotum NOS
  5. Q55.21
    Polyorchism
    BillableExempt
  6. Q55.22
    Retractile testis
    BillableExempt
  7. Q55.23
    Scrotal transposition
    BillableExempt
  8. Q55.29
    Other congenital malformations of testis and scrotum
    BillableExempt
  9. Q55.3
    Atresia of vas deferens
    BillableExempt
    Code first 1

    Code first

    • any associated cystic fibrosis (E84.-) E84
  10. Q55.4
    Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
    BillableExempt
    Inclusion terms 3

    Inclusion terms

    • Absence or aplasia of prostate
    • Absence or aplasia of spermatic cord
    • Congenital malformation of vas deferens, epididymis, seminal vesicles or prostate NOS
  11. Q55.5
    Congenital absence and aplasia of penis
    BillableExempt
  12. Q55.6
    Other congenital malformations of penis
    Header
  13. Q55.61
    Curvature of penis (lateral)
    BillableExempt
  14. Q55.62
    Hypoplasia of penis
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Micropenis
  15. Q55.63
    Congenital torsion of penis
    BillableExempt
    Excludes1 1

    Excludes1

    • acquired torsion of penis (N48.82) N48.82
  16. Q55.64
    Hidden penis
    BillableExempt
    Inclusion terms 2, Excludes1 1

    Inclusion terms

    • Buried penis
    • Concealed penis

    Excludes1

    • acquired buried penis (N48.83) N48.83
  17. Q55.69
    Other congenital malformation of penis
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital malformation of penis NOS
  18. Q55.7
    Congenital vasocutaneous fistula
    BillableExempt
  19. Q55.8
    Other specified congenital malformations of male genital organs
    BillableExempt
  20. Q55.9
    Congenital malformation of male genital organ, unspecified
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • Congenital anomaly of male genital organ
    • Congenital deformity of male genital organ

Sources of each column.

Instructions

At Q55

Excludes1

  • congenital hydrocele (P83.5) P83.5
  • hypospadias (Q54.-) Q54

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

  • Anorchia, anorchism, anorchidism → Q55.0
  • Monorchism, monorchidism → Q55.0
  • Synorchidism, synorchism → Q55.1
  • Polyorchism, polyorchidism → Q55.21
  • Retractile testis → Q55.22
  • Micropenis → Q55.62
  • Concealed penis → Q55.64
  • Hidden penis (congenital) → Q55.64
  • Diphallus → Q55.69
  • Absence (of) (organ or part) (complete or partial)testis (congenital) → Q55.0
  • Agenesistesticle → Q55.0
  • Aplasiatesticle → Q55.0
  • Fusion, fused (congenital)testes → Q55.1
  • Hypoplasia, hypoplasticscrotum → Q55.1
  • Hypoplasia, hypoplastictestis → Q55.1
  • Malformation (congenital)testis and scrotum → Q55.20
  • Transposition (congenital)scrotum → Q55.23
  • Absence (of) (organ or part) (complete or partial)scrotum, congenital → Q55.29
  • Agenesisscrotum → Q55.29
  • Appendagetesticular (organ of Morgagni) → Q55.29
  • Appendix, appendiculartestis → Q55.29
  • Bifid (congenital)scrotum → Q55.29
  • Cleft (congenital)scrotum → Q55.29
  • Hernia, hernial (acquired) (recurrent)tunica vaginalis → Q55.29
  • Inversiontestis (congenital) → Q55.29
  • Migratory, migratingtestis → Q55.29
  • Retroversion, retrovertedtestis (congenital) → Q55.29
  • Supernumerary (congenital)testis → Q55.29
  • Testicle, testicular, testismigrans → Q55.29
  • Atresia, atreticvas deferens → Q55.3
  • Absence (of) (organ or part) (complete or partial)ejaculatory duct (congenital) → Q55.4
  • Absence (of) (organ or part) (complete or partial)epididymis (congenital) → Q55.4
  • Absence (of) (organ or part) (complete or partial)seminal vesicles (congenital) → Q55.4
  • Absence (of) (organ or part) (complete or partial)spermatic cord, congenital → Q55.4
  • Absence (of) (organ or part) (complete or partial)vas deferens (congenital) → Q55.4
  • Agenesisejaculatory duct → Q55.4
  • Agenesisprostate → Q55.4
  • Agenesisseminal vesicles → Q55.4
  • Agenesisspermatic cord → Q55.4
  • Agenesisvas deferens → Q55.4

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

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

Hierarchy