ICD-10-CM 2027
ICD-10 code for uterus accessory
From the official ICD-10-CM alphabetic index entry “Accessory (congenital) › uterus”. Page updated September 29, 2026.
About coding uterus accessory
The ICD-10-CM code for uterus accessory is Q51.28 (Other and unspecified doubling of uterus).
Within Q51.2, choose Q51.28 (Other and unspecified doubling of uterus) only when documentation doesn't support a more specific option: complete doubling of uterus (Q51.21) and partial doubling of uterus (Q51.22).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 742 (Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC, relative weight 1.8456), DRG 743 (Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC, relative weight 1.2974), DRG 760 (Menstrual and Other Female Reproductive System Disorders with CC/MCC, relative weight 1.0129) and DRG 761 (Menstrual and Other Female Reproductive System Disorders without CC/MCC, relative weight 0.7041), in MDC 13 (Diseases and Disorders of the Female Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about uterus accessory ICD-10 codes
What is the ICD-10 code for uterus accessory?
- Q51.28 — Other and unspecified doubling of uterus.
Is Q51.28 billable?
- Yes. Q51.28 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q51.28 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q51.28 as a principal diagnosis.
Is Q51.28 a CC or MCC?
- No. Q51.28 is neither a CC nor an MCC under MS-DRG v44.0.