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Q55

Q55Other congenital malformations of male genital organs

Non-billable headerICD-10-CM

Q55 is a non-billable header ICD-10-CM code for other congenital malformations of male genital organs. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Other codes that can never be billed with Q55

These codes carry an Excludes1 note pointing at Q55. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q55 alone.

Risk adjustment

Q55 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead Q55

10 child codes. Green means billable.

Questions about Q55

Is Q55 a billable ICD-10-CM code?
No. Q55 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Q55 sit in the tabular list?
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of genital organs (Q50-Q56).
What cannot be coded together with Q55?
Q55 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.