Q51.21Billable
Complete doubling of uterus
- Chapter
- 17. Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q51
- Effective date
- October 1, 2026
Related codes in category Q51
Q51Congenital malformations of uterus and cervixQ51.0Agenesis and aplasia of uterusYesQ51.1Doubling of uterus with doubling of cervix and vaginaQ51.10Doubling of uterus w doubling of cervix and vagina w/o obstYesQ51.11Doubling of uterus w doubling of cervix and vagina w obstYesQ51.2Other doubling of uterusQ51.22Partial doubling of uterusYesQ51.28Other and unspecified doubling of uterusYesQ51.3Bicornate uterusYesQ51.4Unicornate uterusYesQ51.5Agenesis and aplasia of cervixYesQ51.6Embryonic cyst of cervixYes
Frequently asked questions
What is ICD-10 code Q51.21?
Q51.21 is an ICD-10-CM diagnosis code for Complete doubling of uterus.
Is Q51.21 a billable code?
Yes. Q51.21 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is Q51.21 in?
Q51.21 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.
When did Q51.21 become effective?
Q51.21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Q51.21?
Q51.21 belongs to category Q51, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.