ICD-10-CM 2027
ICD-10 code for Trigonitis
From the official ICD-10-CM alphabetic index entry “Trigonitis (bladder) (chronic) (pseudomembranous)”. Page updated September 29, 2026.
About coding Trigonitis
The ICD-10-CM code for Trigonitis is N30.30 (Trigonitis without hematuria). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on N30.30.
Within N30.3, choose N30.30 (without hematuria) only when documentation doesn't support a more specific option: with hematuria (N30.31).
Use an additional code to identify infectious agent (B95-B97).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Trigonitis codes (official index)
- with hematuria N30.31 — Trigonitis with hematuria
Common questions about Trigonitis ICD-10 codes
What is the ICD-10 code for Trigonitis?
- N30.30 — Trigonitis without hematuria. More specific codes apply when the documentation supports them: N30.31.
Is N30.30 billable?
- Yes. N30.30 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N30.30 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N30.30 as a principal diagnosis.
Is N30.30 a CC or MCC?
- No. N30.30 is neither a CC nor an MCC under MS-DRG v44.0.