2026 ICD-10-CM Diagnosis Code N41.3Prostatocystitis

ICD-10-CM Codes›N00–N99›N40-N53›N41

ICD-10-CM N41.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N41.3 is a billable ICD-10-CM diagnosis code for prostatocystitis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 727 through 728. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Inflammatory conditions of male genital organs.

Code Identity

ICD-10-CM Code
N41.3
Billable Status
Yes — Valid for Submission
Code Describes
Prostatocystitis
Short Description
Prostatocystitis
Same as the full description in the CMS dataset.
Parent Code
N41
Inflammatory diseases of prostate

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN40-N53Diseases of male genital organs
CategoryN41Inflammatory diseases of prostate
This CodeN41.3Prostatocystitis

Code EditsBilling

Medicare Code Editor checks that affect claim validity for N41.3.

Adult diagnoses
The Medicare Code Editor detects inconsistencies in adult cases by checking a patient's age and any diagnosis on the patient's record. The adult code edits apply to patients age range is 15–124 years inclusive (e.g., senile delirium, mature cataract).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Prostatocystitis

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)
      • with
        • prostatitis
    • Cystitis(exudative) (hemorrhagic) (septic) (suppurative)
      • prostatic
    • Prostatocystitis

Clinical ClassificationClinical

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

CCSR GEN013
Inflammatory conditions of male genital organs
Default principal diagnosis: inpatient Yes · outpatient Yes

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 N41.3 to ICD-9-CMHistory

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

ICD-9-CM
601.3 Prostatocystitis
Exact Match The mapping is direct, with no qualifiers.

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 N41.3Overview

Is N41.3 (Inflammatory diseases of prostate) a billable code?

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

What MS-DRG does N41.3 group to?

When prostatocystitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 727, 728, with relative weights from 0.8112 to 1.4829 depending on complications. Higher weights mean higher Medicare reimbursement.

Who can N41.3 be reported for?

The Medicare Code Editor checks prostatocystitis against patient demographics: this code is intended for adult patients (age 15 through 124). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of N41.3?

Under the General Equivalence Mappings, prostatocystitis converts to ICD-9-CM 601.3 (prostatocystitis). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.