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N77.0

N77.0Ulceration of vulva in diseases classified elsewhere

Billable / specific codeICD-10-CM

N77.0 is a billable, specific ICD-10-CM code for ulceration of vulva 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.

  • ulceration of vulva in gonococcal infection (A54.02)
  • ulceration of vulva in herpesviral [herpes simplex] infection (A60.04)
  • ulceration of vulva in syphilis (A51.0)
  • ulceration of vulva in tuberculosis (A18.18)

Code first

The underlying condition must be sequenced before this code.

  • underlying disease, such as:
  • Behçet's disease (M35.2)

Risk adjustment

N77.0 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.

Related codes at this level

Codes that share N77. If N77.0 is not quite right, the correct code is usually one of these.

Questions about N77.0

Is N77.0 a billable ICD-10-CM code?
Yes. N77.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N77.0 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 N77.0?
N77.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.