Is ICD-10-CM code N30 billable?

No, N30 (Cystitis) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code N30 belong to?

N30 belongs to Chapter 14 of the ICD-10-CM tabular list: N00–N99 (Diseases of the Genitourinary System).

N30Not billable, use a more specific code below

Cystitis

In Other diseases of the urinary system (N30-N39), chapter 14: Diseases of the Genitourinary System

14 billable codes under N30: 4 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

Instructional notes

Excludes1: not coded here, use a different code

prostatocystitis (N41.3)

Use additional code: add a second code for this, listed after this one

code to identify infectious agent (B95-B97)

Also applies, from Other diseases of the urinary system (N30-N39)

These notes sit on N30-N39 and apply to every code under it, including N30.

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-)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers chronic kidney disease staging, CKD in kidney transplant patients, and sequencing CKD with related conditions such as diabetes and hypertension.

Chronic kidney disease (page 62)

Read Section I.C.14 (page 62)

All codes under N30

N30 can't be used on a claim. Pick a billable code below; grey headings group them.

N30 MS-DRGs

As the principal diagnosis, the billable codes under N30 group to these 7 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 689 Kidney and Urinary Tract Infections with MCC (12 of 14 codes)
DRG 690 Kidney and Urinary Tract Infections without MCC (12 of 14 codes)
DRG 791 Prematurity with Major Problems (6 of 14 codes)
DRG 793 Full Term Neonate with Major Problems (6 of 14 codes)
DRG 698 Other Kidney and Urinary Tract Diagnoses with MCC (2 of 14 codes)
DRG 699 Other Kidney and Urinary Tract Diagnoses with CC (2 of 14 codes)
DRG 700 Other Kidney and Urinary Tract Diagnoses without CC/MCC (2 of 14 codes)

Other codes that refer to N30

Notes on these codes point to N30.

N39.0 Excludes1: cystitis (N30.-)
Z84.2 Includes: Conditions classifiable to N30-N99

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

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: Doctors diagnose bladder diseases using different tests. These include urine tests, x-rays, and an examination of the bladder wall with a scope called a cystoscope. Treatment depends on the cause of the problem. It may include medicines and, in severe cases, surgery.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.