ICD-10-CM 2027
ICD-10 code for UTI (urinary tract infection)
Confirmed by the official ICD-10-CM index entry “infection, infected, infective (opportunistic) › urinary (tract)”. Page updated September 29, 2026.
About coding UTI
The ICD-10-CM code for UTI (urinary tract infection) is N39.0 (Urinary tract infection, site not specified). The official index lists 20 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N39.0.
It is also searched as bladder infection.
Within N39 (other disorders of urinary system), N39.0 is specifically for urinary tract infection, site not specified. Related codes cover stress incontinence (female) (male) (N39.3), other specified urinary incontinence (N39.4), other specified disorders of urinary system (N39.8) and disorder of urinary system, unspecified (N39.9).
Don't report N39.0 together with the conditions in its Excludes1 note: candidiasis of urinary tract (B37.4-), neonatal urinary tract infection (P39.3), pyuria (R82.81), cystitis (N30.-) and 2 more.
Use an additional code (B95-B97), to identify infectious agent.
Related UTI codes
- N10 Acute pyelonephritis
- N30.00 Acute cystitis without hematuria
- N30.01 Acute cystitis with hematuria
- N30.10 Interstitial cystitis (chronic) without hematuria
- N30.11 Interstitial cystitis (chronic) with hematuria
- N30.20 Other chronic cystitis without hematuria
- N30.21 Other chronic cystitis with hematuria
- N30.30 Trigonitis without hematuria
- N30.31 Trigonitis with hematuria
- N30.40 Irradiation cystitis without hematuria
- N30.41 Irradiation cystitis with hematuria
- N30.80 Other cystitis without hematuria
- N30.81 Other cystitis with hematuria
- N30.90 Cystitis, unspecified without hematuria
- N30.91 Cystitis, unspecified with hematuria
- O23.40 Unspecified infection of urinary tract in pregnancy, unspecified trimester
- O23.41 Unspecified infection of urinary tract in pregnancy, first trimester
- O23.42 Unspecified infection of urinary tract in pregnancy, second trimester
- O23.43 Unspecified infection of urinary tract in pregnancy, third trimester
- P39.3 Neonatal urinary tract infection
Don't confuse with (Excludes1 for N39.0)
Common questions about UTI ICD-10 codes
What is the ICD-10 code for UTI?
- N39.0 — Urinary tract infection, site not specified. More specific codes apply when the documentation supports them: N10, N30.00, N30.01, N30.10 and others below.
What is the ICD-10 code for acute pyelonephritis?
- N10 — Acute pyelonephritis.
What is the ICD-10 code for acute cystitis without hematuria?
- N30.00 — Acute cystitis without hematuria.
What is the ICD-10 code for acute cystitis with hematuria?
- N30.01 — Acute cystitis with hematuria.
What is the ICD-10 code for interstitial cystitis (chronic) without hematuria?
- N30.10 — Interstitial cystitis (chronic) without hematuria.
What is the ICD-10 code for interstitial cystitis (chronic) with hematuria?
- N30.11 — Interstitial cystitis (chronic) with hematuria.
What is the ICD-10 code for other chronic cystitis without hematuria?
- N30.20 — Other chronic cystitis without hematuria.
Is N39.0 billable?
- Yes. N39.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N39.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N39.0 as a principal diagnosis.
Is N39.0 a CC or MCC?
- N39.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.