All ICD10 Codes

N30

Non-Billable
ChapterN00–N99
Rankcategory
Official Description

Cystitis

Use a more specific code (0 billable, 7 non-billable)
N30.0Acute cystitishas subcodesN30.1Interstitial cystitis (chronic)has subcodesN30.2Other chronic cystitishas subcodesN30.3Trigonitishas subcodesN30.4Irradiation cystitishas subcodesN30.8Other cystitishas subcodesN30.9Cystitis, unspecifiedhas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).

CH14 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)

N30-N39 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • urinary infection (complicating):
  • abortion or ectopic or molar pregnancy (O00-O07, O08.8)
  • pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
Use Additional Code
  • code to identify infectious agent (B95-B97)

Clinical Hierarchy

BillableHas subcodes
CH14Diseases of the genitourinary system (N00-N99)
N30-N39Other diseases of the urinary system (N30-N39)
N30CystitisNot billable
N30.0Acute cystitisSubcodes
N30.1Interstitial cystitis (chronic)Subcodes
N30.2Other chronic cystitisSubcodes
N30.3TrigonitisSubcodes
N30.4Irradiation cystitisSubcodes
N30.8Other cystitisSubcodes
N30.9Cystitis, unspecifiedSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N30:

blockN30-N39
Other diseases of the urinary system (N30-N39)
View context instructions
chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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