Is N77.1 a billable ICD-10-CM code?

Yes. N77.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does N77.1 sit in the tabular list?

Diseases of the genitourinary system (N00-N99), in the block Inflammatory diseases of female pelvic organs (N70-N77).

What cannot be coded together with N77.1?

N77.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

N77.1

N77.1 — Vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere

Billable / specific codeICD-10-CM

N77.1 is a billable, specific ICD-10-CM code for vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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)

Code first

The underlying condition must be sequenced before this code.

underlying disease, such as:
pinworm (B80)

Risk adjustment

N77.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

N77.1 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58747Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58761Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

Code history

N77.1 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share N77. If N77.1 is not quite right, the correct code is usually one of these.

N77.0Ulceration of vulva in diseases classified elsewhere

Questions about N77.1

Is N77.1 a billable ICD-10-CM code?: Yes. N77.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N77.1 sit in the tabular list?: Diseases of the genitourinary system (N00-N99), in the block Inflammatory diseases of female pelvic organs (N70-N77).
What cannot be coded together with N77.1?: N77.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.