ICD-10-CM 2027
ICD-10 code for cervix double
From the official ICD-10-CM alphabetic index entry “Double › cervix”. Page updated September 29, 2026.
About coding cervix double
The ICD-10-CM code for cervix double is Q51.820 (Cervical duplication). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Q51.820.
Within Q51.82 (other congenital malformations of cervix), Q51.820 is specifically for cervical duplication. Related codes cover hypoplasia of cervix (Q51.821) and other congenital malformations of cervix (Q51.828).
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.
More specific cervix double codes (official index)
Common questions about cervix double ICD-10 codes
What is the ICD-10 code for cervix double?
- Q51.820 — Cervical duplication. More specific codes apply when the documentation supports them: Q51.10, Q51.11.
Is Q51.820 billable?
- Yes. Q51.820 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q51.820 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q51.820 as a principal diagnosis.
Is Q51.820 a CC or MCC?
- No. Q51.820 is neither a CC nor an MCC under MS-DRG v44.0.