2027 ICD-10-CM Diagnosis Code N82.9Female genital tract fistula, unspecified

ICD-10-CM Codes›N00–N99›N80-N98›N82

ICD-10-CM N82.9
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N82.9 is a billable ICD-10-CM diagnosis code for female genital tract fistula, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 742 through 743, 760 through 761. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 8 closely related codes. Coders also document this condition as abnormal female sexual function. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders.

Code Identity

ICD-10-CM Code
N82.9
Billable Status
Yes — Valid for Submission
Code Describes
Female genital tract fistula, unspecified
Short Description
Female genital tract fistula, unspecified
Same as the full description in the CMS dataset.
Parent Code
N82
Fistulae involving female genital tract

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN82Fistulae involving female genital tract
This CodeN82.9Female genital tract fistula, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal female sexual function
  • Amenorrhea due to obstetric fistula
  • Fistula of genitourinary tract
  • Fistula of the female genital organs
  • Granulation around vaginal fistula
  • Neurological dysfunction due to obstetric fistula
  • Pathologic amenorrhea
  • Sexual dysfunction due to obstetric fistula
  • Vaginal fistula finding
  • Vaginal granulation tissue

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N82.9: its own notes plus those printed at N82 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From N82 Fistulae involving female genital tract applies to 8 codes
  • vesicointestinal fistulae (N32.1)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

Clinical InformationClinical

  • Female Genital Tract Fistula

    an abnormal communication between a female reproductive system organ and another organ or cavity.

Patient EducationClinical

Fistulas

A fistula is an abnormal connection between two parts inside of the body. Fistulas may develop between different organs, such as between the esophagus and the windpipe or the bowel and the vagina. They can also develop between two blood vessels, such as between an artery and a vein or between two arteries.

Read the full article at MedlinePlus

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

Convert N82.9 to ICD-9-CMHistory

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

ICD-9-CM
619.9 Fem genital fistula NOS
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N82.9Overview

What is the ICD-10 code for female genital tract fistula, unspecified?

The ICD-10-CM code for female genital tract fistula, unspecified is N82.9 (sometimes written as N829). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is N82.9 (Fistulae involving female genital tract) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report female genital tract fistula, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does N82.9 group to?

When female genital tract fistula, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.7039 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.

Is N82.9 a CC or MCC?

CMS lists N82.9 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 8 closely related codes in its exclusion list.

Can N82.9 be reported with N32.1?

Not as a rule. The Excludes1 note at N82, which applies to N82.9, lists "vesicointestinal fistulae (N32.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).