ICD-10-CM 2027 diagnosis code

Q55Other congenital malformations of male genital organs

Not billable — use a more specific code

Q55 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Q55

Q55 is the ICD-10-CM diagnosis code for other congenital malformations of male genital organs. It belongs to block Q50-Q56 (congenital malformations of genital organs) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Q55.0 (testis), Q55.1 (scrotum), Q55.2 (scrotum), Q55.3 (deferens), Q55.4 (prostate), Q55.5 (penis), Q55.6 (penis), Q55.7 (fistula) and 2 more.

Don't report Q55 together with the conditions in its Excludes1 note: congenital hydrocele (P83.5) and hypospadias (Q54.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under Q55

Coding notes

Excludes1Not coded here — never report together with this code

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

Notes that apply from higher levels

Instructions written at a parent level also apply to Q55.

Broader instructions also apply from Q50-Q56 Congenital malformations of genital organs and Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.

Code history

2016
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2021
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2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about Q55

Is Q55 billable?: No. Q55 is a header code. Report one of its more specific subcodes instead.