Q51.1 vs Q52.122
Q51.1 (Doubling of uterus with doubling of cervix and vagina) compared with Q52.122 (Longitudinal vaginal septum, obstructing, left side), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. Q52.122 carries an Excludes1 note covering Q51.1: “doubling of vagina with doubling of uterus and cervix (Q51.1-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| Q51.1Doubling of uterus with doubling of cervix and vagina | Q52.122Longitudinal vaginal septum, obstructing, left side | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) |
| Definition | Doubling of uterus with doubling of cervix and vagina is a non-billable ICD-10-CM category code (Q51.1). | Longitudinal vaginal septum, obstructing, left side is a billable ICD-10-CM diagnosis code (Q52.122). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources