ICD-10-CM › Q00-QA1 › Q50-Q56 › Q55 Other congenital malformations of... › Q55.1
Hypoplasia of testis and scrotum
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Hypoplasia of testis and scrotum
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from Q55 Other congenital malformations of male genital organs
Excludes1 - never coded here
- congenital hydrocele (P83.5)
- hypospadias (Q54.-)
Inherited from the Q50-Q56 section Congenital malformations of genital organs (Q50-Q56)
Excludes1 - never coded here
- androgen insensitivity syndrome (E34.5-)
- syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Fused
- Immature
- Abnormity
- Dysplasia
- Lobulation
- Fold, folds
- Malformation
- Birth > defect
- Maldevelopment
- Septum, septate
- Union, abnormal
- Underdevelopment
- Deformity > testis
- Deformity > scrotum
- Lesion > congenital
- Malformation > scrotum
- Implantation > anomalous
- Segmentation, incomplete
- Congenital > malformation
- Prematurity NEC > extreme
- Undeveloped, undevelopment
- Anomaly, anomalous > testis
- Anomaly, anomalous > scrotum
- Birth > immature > extremely
- Immature > birth > extremely
- Syndrome > cardiorenal Note:
- Premature > newborn > extreme
- Anomaly, anomalous > Müllerian
- Band > anomalous or congenital
- Failure, failed > segmentation
- Immaturity > organ or site NEC
- Adhesions, adhesive > congenital
- Defect, defective > developmental
- Development > defective, congenital
- Development > imperfect, congenital
- Abnormal, abnormality, abnormalities
- Accessory > organ or site not listed
- Flat > organ or site, congenital NEC
- Agenesis > organ > or site not listed
- Fistula > congenital, site not listed
Showing 40 of 66 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| Q55.0 | Absence and aplasia of testis | Valid |
| Q55.2 | Other and unspecified congenital malformations of testis and scrotum | Not billable |
| Q55.3 | Atresia of vas deferens | Valid |
| Q55.4 | Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate | Valid |
| Q55.5 | Congenital absence and aplasia of penis | Valid |
| Q55.6 | Other congenital malformations of penis | Not billable |
| Q55.7 | Congenital vasocutaneous fistula | Valid |
| Q55.8 | Other specified congenital malformations of male genital organs | Valid |
| Q55.9 | Congenital malformation of male genital organ, unspecified | Valid |