2027 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 2027 (October 1, 2026 through September 30, 2027) 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
- Hyperkeratosis of vulva
- Lichen planus of vulva
- Lichenification of female perineum
- Lichenification of vulva
- Reactive arthritis of spine
- Reactive arthritis triad
- Vaginitis associated with another disorder
- Vulvitis associated with another disorder
- Vulvovaginitis associated with another disorder
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N77.1: its own notes plus those printed at block N70-N77 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.
- 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)
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.
- 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)
Code First
The underlying condition named in the note is sequenced before this code.
- underlying disease, such as:
- pinworm (B80)
Code Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
- if applicable, pelvic abscess (K6A.0-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
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, 2026 through September 30, 2027.
What MS-DRG does N77.1 group to?
On inpatient claims, vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere maps to MS-DRG 742, 759, 743, 758, 757, with relative weights from 0.7687 to 1.8448 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.
Can N77.1 be reported with a code from B37.3?
Not as a rule. The Excludes1 note on N77.1 lists "candidal vulvovaginitis (B37.3-)". 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).
What is coded first with N77.1?
The Code First note reads: underlying disease, such as: pinworm (B80). When one of these applies, it is sequenced before N77.1.
