Benign prostatic hyperplasia (N40) ICD-10-CM
The N40 code range covers benign prostatic hyperplasia with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- adenofibromatous hypertrophy of prostate
- benign hypertrophy of the prostate
- benign prostatic hypertrophy
- BPH
- enlarged prostate
- nodular prostate
- polyp of prostate
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- benign neoplasms of prostate adenoma, benign fibroadenoma fibroma myoma D29.1
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- malignant neoplasm of prostate C61
Codes in the N40 Range 5 codes · 4 billable
- N40 Benign prostatic hyperplasiaNon-billable
- N40.0 Benign prostatic hyperplasia without lower urinary tract symptoms
- N40.1 Benign prostatic hyperplasia with lower urinary tract symptoms
- N40.2 Nodular prostate without lower urinary tract symptoms
- N40.3 Nodular prostate with lower urinary tract symptoms
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the N40 range.
Lower Urinary Tract Symptoms
Symptoms of disorders of the lower urinary tract including frequency, NOCTURIA; urgency, incomplete voiding, and URINARY INCONTINENCE. They are often associated with OVERACTIVE BLADDER; URINARY INCOMPETENCE; and INTERSTITIAL CYSTITIS. Lower urinary tract symptoms in males were traditionally called PROSTATISM.
Nocturia
Frequent URINATION at night that interrupts sleep. It is often associated with outflow obstruction, DIABETES MELLITUS, or bladder inflammation (CYSTITIS).
Prostatic Hyperplasia
Increase in constituent cells in the PROSTATE, leading to enlargement of the organ (hypertrophy) and adverse impact on the lower urinary tract function. This can be caused by increased rate of cell proliferation, reduced rate of cell death, or both.
Prostatism
Lower urinary tract symptom, such as slow urinary stream, associated with PROSTATIC HYPERPLASIA in older men.
About the N40 Code Range
ICD-10 code N40 and its subcodes identify various types of benign prostatic hyperplasia (BPH), a non-cancerous enlargement of the prostate gland. These codes distinguish whether BPH is present with or without symptoms affecting the lower urinary tract and describe specific prostate findings such as nodularity.
The general code N40 covers benign prostatic hyperplasia broadly, while N40.0 specifies BPH without lower urinary symptoms, commonly called prostatism or large prostate. This code is used when the prostate is enlarged but not causing issues like difficulty urinating. In contrast, N40.1 identifies BPH accompanied by symptoms such as urinary hesitancy, urgency, weak stream, or nocturia—synonymous with terms like benign prostatic hyperplasia with outflow obstruction. Codes N40.2 and N40.3 relate to a nodular prostate, differentiating cases without (N40.2) and with (N40.3) lower urinary tract symptoms. Medical coders can use this suite of ICD-10 codes to precisely specify BPH conditions, supporting accurate diagnosis and treatment planning.
Questions About This Page
How many billable codes are in the N40 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the N40 range classify?
The range classifies benign prostatic hyperplasia. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
