2026 ICD-10-CM Diagnosis Code N77.1Vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere
ICD-10-CM Codes›N00–N99›N70-N77›N77
- Billable — Valid for Submission
- Not Chronic
N77.1 is a billable ICD-10-CM diagnosis code for vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere. 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, 757 through 759. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Inflammatory diseases of female pelvic organs.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for N77.1.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Allergic vaginitis
- Circinate vulvovaginitis co-occurrent with reactive arthritis triad
- Crohn's disease of skin
- Crohn's disease of vulva
- Eruption of female perineum
- Eruption of vulva
- Extraintestinal Crohn's
- Genital lichen planus
- Lichen planus of vulva
- Reactive arthritis of spine
- Reactive arthritis triad
- Vaginitis associated with another disorder
- Vulvitis associated with another disorder
- Vulvovaginitis associated with another disorder
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Code First
- underlying disease, such as:
- pinworm B80
Type 1 Excludes
- candidal vulvovaginitis B37.3
- chlamydial vulvovaginitis A56.02
- gonococcal vulvovaginitis A54.02
- herpesviral herpes simplex vulvovaginitis A60.04
- trichomonal vulvovaginitis A59.01
- tuberculous vulvovaginitis A18.18
- vulvovaginitis in early syphilis A51.0
- vulvovaginitis in late syphilis A52.76
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Vaginitis
Vaginitis, also called vulvovaginitis, is an inflammation or infection of the vagina. It can also affect the vulva, which is the external part of a woman's genitals. Vaginitis can cause itching, pain, discharge, and odor.
The full article covers:
- What is vaginitis?
- What causes vaginitis?
- What are the symptoms of vaginitis?
- How is the cause of vaginitis diagnosed?
- What are the treatments for vaginitis?
- Can vaginitis cause other health problems?
- Can vaginitis be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N77.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N77.1Overview
Is N77.1 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does N77.1 group to?
On inpatient claims, vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere maps to MS-DRG 742, 743, 757, 758, 759, with relative weights from 0.6636 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.
Can N77.1 be a principal diagnosis?
No. This is a manifestation code: vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
What is the ICD-9 equivalent of N77.1?
Under the General Equivalence Mappings, vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere converts to ICD-9-CM 616.11 (vaginitis in oth disease). 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.
