Coding and coverage · ICD-10-CM

N30

N30.3 Trigonitis

Not billable (header)Chapter 14

Report one of the more specific codes below.

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Codes under this one

  • N30.30 Trigonitis without hematuria
  • N30.31 Trigonitis with hematuria

Instructional notes

Chapter 14

Excludes2Not included here: the patient may have both; report both when both are present.
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Section N30-N39

Excludes2Not included here: the patient may have both; report both when both are present.
  • urinary infection (complicating):
  • abortion or ectopic or molar pregnancy (O00-O07, O08.8)
  • pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)

N30

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
Use additional codeAdd a second code for the full picture.
  • code to identify infectious agent (B95-B97)

This code

Inclusion terms
  • Urethrotrigonitis

Chapter 14: Diseases of the genitourinary system · N30-N39 Other diseases of the urinary system (N30-N39)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.