2026 ICD-10-CM Diagnosis Code N99.3Prolapse of vaginal vault after hysterectomy

ICD-10-CM Codes›N00–N99›N99›N99

ICD-10-CM N99.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N99.3 is a billable ICD-10-CM diagnosis code for prolapse of vaginal vault after hysterectomy. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders and Postprocedural or postoperative genitourinary system complication.

Code Identity

ICD-10-CM Code
N99.3
Billable Status
Yes — Valid for Submission
Code Describes
Prolapse of vaginal vault after hysterectomy
Short Description
Prolapse of vaginal vault after hysterectomy
Same as the full description in the CMS dataset.
Parent Code
N99
Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
CategoryN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
This CodeN99.3Prolapse of vaginal vault after hysterectomy

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Prolapse of vaginal vault after hysterectomy
  • Vaginal vault prolapse

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.

    • Complication(s) (from) (of)
      • genitourinary
        • postprocedural
          • vaginal
            • vault prolapse
    • Complication(s) (from) (of)
      • surgical procedure (on)
        • vaginal vault prolapse (posthysterectomy)
    • Inversion
      • vagina (posthysterectomy)
    • Prolapse, prolapsed
      • vagina (anterior) (wall)
        • posthysterectomy

Clinical ClassificationClinical

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

CCSR GEN025
Other specified female genital disorders
Default principal diagnosis: inpatient No · outpatient No
CCSR GEN026
Postprocedural or postoperative genitourinary system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Hysterectomy

A hysterectomy is surgery to remove the uterus (womb). The uterus is the place where a fetus grows during pregnancy. A hysterectomy treats problems like heavy bleeding, pain, or cancer in the uterus.

The full article covers:

  • What is a hysterectomy?
  • What conditions does a hysterectomy treat?
  • What are the different types of hysterectomies?
  • What methods are used for a hysterectomy?
  • What are the risks of a hysterectomy?

Read the full article at MedlinePlus

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

Convert N99.3 to ICD-9-CMHistory

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

ICD-9-CM
618.5 Postop vaginal prolapse
Exact Match The mapping is direct, with no qualifiers.

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 N99.3Overview

Is N99.3 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report prolapse of vaginal vault after hysterectomy on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N99.3 group to?

When prolapse of vaginal vault after hysterectomy 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 N99.3?

Under the General Equivalence Mappings, prolapse of vaginal vault after hysterectomy converts to ICD-9-CM 618.5 (postop vaginal prolapse). The mapping is a direct match.

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.