funguria

DEFINITION of funguria

funguria (fung--uria) is the presence of fungal elements—most commonly budding yeast cells or pseudohyphae of Candida species—identified on urinalysis or urine culture. It ranges from asymptomatic colonization (common in patients with indwelling catheters, diabetes, or recent broad-spectrum antibiotic use) to a true candidal urinary tract infection with pyuria and systemic symptoms. The distinction between colonization and infection is the central coding and clinical decision point: colonization reflects contamination or benign fungal presence without tissue invasion, whereas infection (candiduria with clinical/laboratory evidence of cystitis, pyelonephritis, or urosepsis) requires antifungal therapy and site-specific ICD-10-CM coding. Candida albicans accounts for the majority of cases, with non-albicans species (C. glabrata, C. tropicalis) increasingly seen in catheterized or immunocompromised patients. funguria is distinguished from bacteriuria (bacterial, not fungal, organisms in urine) and from pyuria (white blood cells in urine, which may or may not accompany funguria).

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ETYMOLOGY of funguria

latin greek — hybrid formation

Component	Origin	Meaning
fung-	Latin fungus (“mushroom, fungus”)	Combining form denoting a fungal organism
-uria	Greek ouron (οὖρον, “urine”)	Noun-forming suffix — “condition of urine” or “presence of ___ in urine”

funguria is a Latin-Greek hybrid, pairing the Latin root for fungus with the Greek suffix -uria that also builds bacteriuria, hematuria, pyuria, and glycosuria. The synonym candiduria substitutes the genus name Candida (Latin, “white/glowing,” referencing the organism’s colony color) for the more general fung- root, specifying the causative organism rather than the broader fungal category.

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🔀 ALIASES / ALTERNATE TERMS

• Candiduria (the most frequently used clinical term; specifies Candida as the causative genus rather than fungi generally)
• Fungiuria / mycouria (less common synonyms; myco- is the Greek-origin combining form for fungus, used interchangeably with the Latin fung-)
• Yeast in urine (lay/clinical shorthand, often used in urinalysis report comments)
• Asymptomatic funguria (colonization without infection; no antifungal treatment typically indicated per IDSA guidelines)
• Candidal cystitis (symptomatic bladder-localized infection; codes to B37.41)

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🔗 RELATED TERMS

• bacteriuria — bacterial (not fungal) organisms in urine; the more common analogous finding, coded to R82.71 when asymptomatic.
• pyuria — white blood cells in urine; may accompany funguria when true infection (not mere colonization) is present.
• candidiasis — the broader fungal infection category caused by Candida species; funguria/candiduria is the urogenital-tract manifestation.
• cystitis — bladder inflammation; when fungal in origin, captured by B37.41 rather than the bacterial N30.- series.
• UTI — funguria may or may not represent a true UTI; site-specific fungal codes take priority over the nonspecific N39.0 when documented.
• catheter — indwelling urinary catheters are the leading risk factor for funguria/candiduria via biofilm colonization.
• fungemia — systemic bloodstream spread of Candida; a feared complication of untreated funguria in immunocompromised or critically ill patients, coded to B37.7.

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CODING CORNER

🏥 ICD-10-CM CODES

Candidal Urogenital Infection (Confirmed, Symptomatic)

Code	Description
B37.41	Candidal cystitis and urethritis
B37.49	Other urogenital candidiasis (includes candidal pyelonephritis/renal tract candidiasis)
B37.7	Candidal sepsis (fungemia; use when systemic spread is documented)
B37.9	Candidiasis, unspecified (use only if site/type is not documented—avoid when urinary site is known)

Abnormal Finding, Colonization/Asymptomatic (No Confirmed Infection)

Code	Description
R82.79	Other abnormal findings on microbiological examination of urine (appropriate for asymptomatic funguria/positive fungal culture without clinician-confirmed infection)

Associated/Companion Codes

Code	Description
N39.0	Urinary tract infection, site not specified (use only if fungal UTI site is undocumented; Excludes1 applies once a fungal-specific code is assigned)
T83.51XA	Infection and inflammatory reaction due to indwelling urethral catheter, initial encounter (use additional code when catheter-associated funguria is the source)

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🔧 COMMON CPT CODES (Funguria-Related Diagnostic Workup)

CPT Code	Description
81001	Urinalysis, by dip stick or tablet reagent; automated, with microscopy
81003	Urinalysis, by dip stick or tablet reagent; automated, without microscopy
87086	Culture, bacterial; quantitative colony count, urine (often ordered alongside fungal culture to rule out concurrent bacteriuria)
87102	Culture, fungi, isolation, with routine culture; other source (urine)

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⚠️ Coding Note: Documentation must clearly distinguish asymptomatic funguria/colonization (R82.79) from a clinician-confirmed candidal infection (B37.41/B37.49) — this is the single highest-risk area for audit and denial, since a positive culture alone does not support a fungal infection code without provider linkage to signs/symptoms or treatment intent. On inpatient profee claims, watch for documentation stating only “yeast in urine” or “positive fungal culture” without a stated diagnosis — this should trigger a physician query rather than automatic assignment of B37.41/B37.49. When funguria develops in a catheterized patient, sequence the catheter-associated infection code (T83.51XA) as an additional code per ICD-10-CM guidelines, not as the principal diagnosis, with the organism-specific candidal code (B37.41/B37.49) reported first if infection is confirmed. Species-level identification (C. albicans vs. non-albicans) does not change ICD-10-CM code selection but may affect CPT susceptibility testing and antifungal choice—verify payer-specific requirements for prior authorization on fluconazole-resistant species workups.

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DERIVATIONS of funguria

TABLE definition AS Definition
FROM #medterm 
WHERE length(filter(roots, (word) => econtains([[funguria]].roots, word))) > 0 AND file.name != [[funguria]].file.name
SORT file.name ASC

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Query functionality

TABLE definition AS Definition
FROM #medterm
WHERE file.name != this.file.name
AND any(contains(this.description, description))

Med terms dictionary Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms