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  2. ICD-10-CM Codes List
  3. N00–N99
  4. N40-N53
  5. Benign prostatic hyperplasia (N40)

Benign prostatic hyperplasia (N40)

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.

Instructional Notations

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

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

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.