MCMCB Pro
A57

A57Chancroid

Billable / specific codeICD-10-CM

A57 is a billable, specific ICD-10-CM code for chancroid. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Ulcus molle

Risk adjustment

A57 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.

How A57 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A57.

  • Chancroid(anus) (genital) (penis) (perineum) (rectum) (urethra) (vulva)
  • Ducrey's chancre
  • Ducreyi chancre
  • Nisbet's chancre
  • Virulent bubo
  • Adenitischancroid(Hemophilus ducreyi)
  • Balanitisdue to Haemophilus ducreyi
  • Bubochancroidal
  • Bubodue to Haemophilus ducreyi
  • Bubosoft chancre
  • Bubovirulent(chancroidal)
  • ChancreDucrey's

Questions about A57

Is A57 a billable ICD-10-CM code?
Yes. A57 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does A57 sit in the tabular list?
Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).
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.