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ICD-10-CM 2027

ICD-10 code for uterus rudimentary

Q51.818

Other congenital malformations of uterus

✓ Billable / specificFemale only

From the official ICD-10-CM alphabetic index entry “Rudimentary (congenital) › uterus”. Page updated September 29, 2026.

About coding uterus rudimentary

The ICD-10-CM code for uterus rudimentary is Q51.818 (Other congenital malformations of uterus). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q51.818.

Within Q51.81, choose Q51.818 (Other congenital malformations of uterus) only when documentation doesn't support a more specific option: arcuate uterus (Q51.810) and hypoplasia of uterus (Q51.811).

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 uterus rudimentary codes (official index)

  • in male Q56.1 — Male pseudohermaphroditism, not elsewhere classified

Common questions about uterus rudimentary ICD-10 codes

What is the ICD-10 code for uterus rudimentary?

Q51.818 — Other congenital malformations of uterus. More specific codes apply when the documentation supports them: Q56.1.

Is Q51.818 billable?

Yes. Q51.818 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Q51.818 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Q51.818 as a principal diagnosis.

Is Q51.818 a CC or MCC?

No. Q51.818 is neither a CC nor an MCC under MS-DRG v44.0.