2027 ICD-10-CM Diagnosis Code N82.3Fistula of vagina to large intestine

ICD-10-CM Codes›N00–N99›N80-N98›N82

ICD-10-CM N82.3
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N82.3 is a billable ICD-10-CM diagnosis code for fistula of vagina to large intestine. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 393 through 395, 791, 793. 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 colovaginal fistula. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders.

Code Identity

ICD-10-CM Code
N82.3
Billable Status
Yes — Valid for Submission
Code Describes
Fistula of vagina to large intestine
Short Description
Fistula of vagina to large intestine
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 CodeN82.3Fistula of vagina to large intestine

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Colovaginal fistula
  • Fistula of sigmoid colon
  • Fistula of vagina to large intestine
  • Intestinovaginal fistula
  • Rectovaginal fistula
  • Rectovaginal fistula with anal sphincter involvement
  • Sigmoidovaginal fistula

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N82.3: 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.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Rectovaginal fistula

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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N82.3, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming N82.3: they are not reported together with it, unless the two conditions are unrelated.

  • K60.4 Rectal fistula
    rectovaginal fistula (N82.3)

Excludes2 1

These codes carry an Excludes2 note naming N82.3: its condition is not part of those codes, and both may be reported when the patient has both.

  • K63.2 Fistula of intestine
    intestinal-genital fistula, female (N82.2-N82.4) names N82.2-N82.4, which includes this code

Code Also 3

These codes say N82.3 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • K60.32 Anal fistula, complex
    rectovaginal fistula (N82.3)
  • K60.42 Rectal fistula, complex
    rectovaginal fistula (N82.3)
  • K60.52 Anorectal fistula, complex
    rectovaginal fistula (N82.3)

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

Patient EducationClinical

Colonic Diseases

Your colon, also known as the large intestine, is part of your digestive system. It's a long, hollow tube at the end of your digestive tract where your body makes and stores stool. Many disorders affect the colon's ability to work properly. Some of these include:

Read the full article at MedlinePlus

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

Convert N82.3 to ICD-9-CMHistory

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

ICD-9-CM
619.1 Digest-genit fistul, fem
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N82.3Overview

What is the ICD-10 code for fistula of vagina to large intestine?

The ICD-10-CM code for fistula of vagina to large intestine is N82.3 (sometimes written as N823). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is N82.3 (Fistulae involving female genital tract) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report fistula of vagina to large intestine on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does N82.3 group to?

When fistula of vagina to large intestine is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 394, 395, 393, with relative weights from 0.6379 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.

Is N82.3 a CC or MCC?

CMS lists N82.3 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 N82.3 be reported with N32.1?

Not as a rule. The Excludes1 note at N82, which applies to N82.3, 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).