ICD-10-CM 2027
ICD-10 code for uterus atresia
From the official ICD-10-CM alphabetic index entry “Atresia, atretic › uterus”. Page updated September 29, 2026.
About coding uterus atresia
The ICD-10-CM code for uterus atresia 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 atresia codes (official index)
- acquired N85.8 — Other specified noninflammatory disorders of uterus
Common questions about uterus atresia ICD-10 codes
What is the ICD-10 code for uterus atresia?
- Q51.818 — Other congenital malformations of uterus. More specific codes apply when the documentation supports them: N85.8.
What is the ICD-10 code for acquired uterus atresia?
- N85.8 — Other specified noninflammatory disorders of uterus.
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.