ICD-10-CM 2027 diagnosis code
Q52.12Longitudinal vaginal septum
Q52.12 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Q52.12
Q52.12 is the ICD-10-CM diagnosis code for longitudinal vaginal septum. It belongs to category Q52 (other congenital malformations of female genitalia), block Q50-Q56 (congenital malformations of genital organs) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.
Within Q52.1 (doubling of vagina), Q52.12 is specifically for longitudinal vaginal septum. Related codes cover unspecified (Q52.10) and transverse vaginal septum (Q52.11).
To report this condition, pick the subcode that matches the documentation: Q52.120 (nonobstructing), Q52.121 (obstructing, right side), Q52.122 (obstructing, left side), Q52.123 (microperforate, right side), Q52.124 (microperforate, left side) and Q52.129 (septum).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2017 (expanded into subcodes).
Specific codes under Q52.12
- Q52.120Longitudinal vaginal septum, nonobstructingBillable
- Q52.121Longitudinal vaginal septum, obstructing, right sideBillable
- Q52.122Longitudinal vaginal septum, obstructing, left sideBillable
- Q52.123Longitudinal vaginal septum, microperforate, right sideBillable
- Q52.124Longitudinal vaginal septum, microperforate, left sideBillable
- Q52.129Other and unspecified longitudinal vaginal septumBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to Q52.12.
› From Q52.1 Doubling of vagina
- doubling of vagina with doubling of uterus and cervix (Q51.1-)
Broader instructions also apply from Q50-Q56 Congenital malformations of genital organs and Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- FY2017 (effective 10/1/2016): Expanded — no longer billable
Common questions about Q52.12
Is Q52.12 billable?
- No. Q52.12 is a header code. Report one of its more specific subcodes instead.