ICD-10 N39.0
Billable / Specific CCUrinary tract infection, site not specified
About ICD-10-CM N39.0
ICD-10-CM code N39.0 represents Urinary tract infection, site not specified. This is a billable/specific code in the Genitourinary System chapter (block N39). The 2026 edition of ICD-10-CM N39.0 became effective on October 1, 2025.
Coding Tips for N39.0
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
N39.0 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Type 1 Excludes
Pure excludes, these codes can never be coded together with N39.0. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- candidiasis of urinary tract (B37.4-)
- neonatal urinary tract infection (P39.3)
- pyuria (R82.81)
- urinary tract infection of specified site, such as:
- cystitis (N30.-)
- pyonephrosis (N13.6)
- urethritis (N34.-)
Use Additional Code
When coding N39.0, also report these additional codes when applicable.
- code (B95-B97), to identify infectious agent.
Inpatient DRG Impact, CC
1344:75 codes Urinary tract infection, site not specified. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for N39.0
Local Coverage Determinations (LCDs) from CMS MACs that list N39.0 as a covered diagnosis.
Showing top 10 of 132 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing N39.0.
1 Cigna
4 Medicare
2 Aetna
CPT Codes Commonly Billed with N39.0
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 99202 New patient office visit — fever, headache, abdominal pain, cough, dyspnea, fatigue, dizziness, limb pain, nausea, routine exam, URI, UTI, pharyngitis, otitis, chest pain, weight loss Primary Care
- 99203 New patient office visit — common complaints plus chronic conditions: HTN, diabetes, hyperlipidemia, asthma, GERD, back pain, migraine, tachycardia, prediabetes Primary Care
- 99204 New patient office visit — multiple chronic conditions: HTN, T2DM, hyperlipidemia, asthma, anxiety, depression, obesity, IBS, COPD, thyroid, anemia, CAD, sleep apnea, psoriasis, RA Primary Care
- 99212 Established patient — URI, UTI, pharyngitis, otitis, dermatitis, rash, viral infection, cellulitis, conjunctivitis, sinusitis, bronchitis, ankle sprain Primary Care
- 99213 Established patient — HTN follow-up, diabetes management, hyperlipidemia, asthma, anxiety, common complaints, back pain, GERD, migraine, acne, joint pain, prediabetes, obesity, anemia, hypothyroid, fatigue Primary Care
- 81001 Urinalysis with microscopy — UTI, cystitis, dysuria, urinary frequency, abnormal urine, pyelonephritis, chronic pyelonephritis, fever, kidney stone Laboratory
- 87086 Urine culture — UTI, cystitis, pyelonephritis, abnormal urine, dysuria Laboratory
- 99282 ED visit level 2 — same as level 1 with low complexity MDM Emergency Medicine
- 99283 ED visit level 3 — chest pain, dyspnea, pneumonia, UTI, forearm fracture, tibia fracture, syncope, GI bleed Emergency Medicine
Convert N39.0 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| N39.0 | 5990 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To N39.0
Other codes in section N30-N39 (Other diseases of the urinary system).
ICD-10 N39.0, Billing FAQ
Is ICD-10 code N39.0 billable? +
Yes, N39.0 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for N39.0? +
Type 1 Excludes (never code together with N39.0): candidiasis of urinary tract (B37.4-); neonatal urinary tract infection (P39.3); pyuria (R82.81)
Is N39.0 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with N39.0? +
Procedures frequently paired with N39.0 include: 99202, 99203, 99204, 99212, 99213.
What ICD-9 codes does N39.0 map to? +
Per CMS GEMs, N39.0 maps to ICD-9 codes: 5990. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 17, 2026.
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