B37.31 — Acute candidiasis of vulva and vagina
Is B37.31 billable?
Yes — B37.31 is billable for FY2027. B37.31 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. B37.31 may be submitted for encounters from October 1, 2026 through September 30, 2027.
B37.31 at a glance
| Code | B37.31 |
|---|---|
| Description | Acute candidiasis of vulva and vagina |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does B37.31 group to?
B37.31 sits in MDC 13 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 757Infections, Female Reproductive System with MCCmedical
- 758Infections, Female Reproductive System with CCmedical
- 759Infections, Female Reproductive System without CC/MCCmedical
How is B37.31 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to B37.31. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Candidiasis, candidal › vagina
- Candidiasis, candidal › vulva
- Candidiasis, candidal › vulvovaginitis
- Mycosis, mycotic › vagina, vaginitis
- Thrush › vaginal
- Vaginitis › candidal (acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative)
- Vaginitis › monilial (acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative)
- Vaginitis › mycotic (acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative)
- Vulvitis › candidal (acute) (allergic) (atrophic) (hypertrophic) (intertriginous) (senile)
- Vulvitis › monilial (acute) (allergic) (atrophic) (hypertrophic) (intertriginous) (senile)
- Vaginitis › in › candidiasis (acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative)
Inclusion terms
Alternative wording in documentation that is classified to B37.31.
- Candidiasis of vulva and vagina NOS
Excludes1 — never code together — inherited from B37
The conditions below can never be reported together with B37.31 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- neonatal candidiasis (P37.5)
Use additional code — inherited from Chapter 1
Report an additional code alongside B37.31 to fully describe the condition. B37.31 is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here — inherited from Chapter 1
The conditions below are not part of B37.31, but a patient may have both at the same time. When documentation supports it, B37.31 and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Excludes2 — not included here — inherited from B35-B49
The conditions below are not part of B37.31, but a patient may have both at the same time. When documentation supports it, B37.31 and the excluded code may both be reported.
How long has B37.31 existed?
B37.31 first appears in FY2023.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.