MCMCB Pro
N77

N77Vulvovaginal ulceration and inflammation in diseases classified elsewhere

Non-billable headerICD-10-CM

N77 is a non-billable header ICD-10-CM code for vulvovaginal ulceration and inflammation in diseases classified elsewhere. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

N77 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.

Code to one of these instead N77

2 child codes. Green means billable.

Questions about N77

Is N77 a billable ICD-10-CM code?
No. N77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does N77 sit in the tabular list?
Diseases of the genitourinary system (N00-N99), in the block Inflammatory diseases of female pelvic organs (N70-N77).
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.