2026 ICD-10-CM Diagnosis Code N30.21Other chronic cystitis with hematuria

ICD-10-CM Codes›N00–N99›N30-N39›N30

ICD-10-CM N30.21
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N30.21 is a billable ICD-10-CM diagnosis code for other chronic cystitis with hematuria. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 689 through 690. Coders also document this condition as chronic cystitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Hematuria and Urinary tract infections.

This medical diagnosis code is frequently used in Family Practice, Internal Medicine, OB/GYN, and Pediatrics medical specialties to designate conditions such urinary tract infection, cystitis.

Code Identity

ICD-10-CM Code
N30.21
Billable Status
Yes — Valid for Submission
Code Describes
Other chronic cystitis with hematuria
Short Description
Other chronic cystitis with hematuria
Same as the full description in the CMS dataset.
Parent Code
N30.2
Other chronic cystitis

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN30-N39Other diseases of the urinary system
CategoryN30Cystitis
This CodeN30.21Other chronic cystitis with hematuria

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic cystitis
  • Cystitis associated with another disorder
  • Hematuria co-occurrent and due to chronic cystitis
  • Hematuria co-occurrent and due to cystitis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Cystitis(exudative) (hemorrhagic) (septic) (suppurative)
      • chronic
        • with hematuria
    • Cystitis(exudative) (hemorrhagic) (septic) (suppurative)
      • chronic
        • specified NEC
          • with hematuria

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR GEN009
Hematuria
Default principal diagnosis: inpatient No · outpatient No
CCSR GEN004
Urinary tract infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Chronic Cystitis

    recurrent infections of the urinary bladder.

Patient EducationClinical

Bladder Diseases

The bladder is a hollow organ in your lower abdomen that stores urine. Many conditions can affect your bladder. Some common ones are:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert N30.21 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
595.2 Chronic cystitis NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N30.21Overview

Is N30.21 (Other chronic cystitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other chronic cystitis with hematuria on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N30.21 group to?

When other chronic cystitis with hematuria is the principal diagnosis on an inpatient stay, it groups to MS-DRG 689, 690, with relative weights from 0.8095 to 1.1603 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N30.21?

Under the General Equivalence Mappings, other chronic cystitis with hematuria converts to ICD-9-CM 595.2 (chronic cystitis NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.