2026 ICD-10-CM Diagnosis Code N90.7Vulvar cyst

ICD-10-CM Codes›N00–N99›N80-N98›N90

ICD-10-CM N90.7
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N90.7 is a billable ICD-10-CM diagnosis code for vulvar cyst. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 742 through 743, 760 through 761. Coders also document this condition as cyst of vulva. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders.

Code Identity

ICD-10-CM Code
N90.7
Billable Status
Yes — Valid for Submission
Code Describes
Vulvar cyst
Short Description
Vulvar cyst
Same as the full description in the CMS dataset.
Parent Code
N90
Other noninflammatory disorders of vulva and perineum

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN90Other noninflammatory disorders of vulva and perineum
This CodeN90.7Vulvar cyst

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cyst of vulva
  • Labial cyst

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Cyst(colloid) (mucous) (simple) (retention)
      • clitoris
    • Cyst(colloid) (mucous) (simple) (retention)
      • dermoid
        • implantation
          • vulva
    • Cyst(colloid) (mucous) (simple) (retention)
      • external female genital organs NEC
    • Cyst(colloid) (mucous) (simple) (retention)
      • implantation (dermoid)
        • vulva
    • Cyst(colloid) (mucous) (simple) (retention)
      • labium (majus) (minus)
    • Cyst(colloid) (mucous) (simple) (retention)
      • labium (majus) (minus)
        • sebaceous
    • Cyst(colloid) (mucous) (simple) (retention)
      • skin
        • genital organ NEC
          • female
    • Cyst(colloid) (mucous) (simple) (retention)
      • vulva (implantation) (inclusion)
    • Cyst(colloid) (mucous) (simple) (retention)
      • vulva (implantation) (inclusion)
        • sebaceous gland
    • Cyst(colloid) (mucous) (simple) (retention)
      • vulvovaginal gland
    • Implantation
      • cyst
        • vulva

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR GEN025
Other specified female genital disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Vulvar Disorders

The vulva is the external part of a woman's genitals. Some problems you can have with the vulvar area include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert N90.7 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
624.8 Noninflam dis vulva NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N90.7Overview

Is N90.7 (Other noninflammatory disorders of vulva and perineum) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report vulvar cyst on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N90.7 group to?

When vulvar cyst is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.5696 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N90.7?

Under the General Equivalence Mappings, vulvar cyst converts to ICD-9-CM 624.8 (noninflam dis vulva NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.