2022 ICD-10-CM Code N42.9

Disorder of prostate, unspecified

Version 2021

Valid for Submission

ICD-10:N42.9
Short Description:Disorder of prostate, unspecified
Long Description:Disorder of prostate, unspecified

Code Classification

  • Diseases of the genitourinary system (N00–N99)
    • Diseases of male genital organs (N40-N53)
      • Other and unspecified disorders of prostate (N42)

N42.9 is a billable diagnosis code used to specify a medical diagnosis of disorder of prostate, unspecified. The code N42.9 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code N42.9 might also be used to specify conditions or terms like disorder of prostate, lesion of prostate or problem of prostate.

The code N42.9 is applicable to adult patients aged 15 through 124 years inclusive. It is clinically and virtually impossible to use this code on a patient outside the stated age range.

Unspecified diagnosis codes like N42.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code N42.9 are found in the index:

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert N42.9 to ICD-9 Code

Information for Patients


Prostate Diseases

The prostate is a gland in men. It helps make semen, the fluid that contains sperm. The prostate surrounds the tube that carries urine away from the bladder and out of the body. A young man's prostate is about the size of a walnut. It slowly grows larger with age. If it gets too large, it can cause problems. This is very common after age 50. The older men get, the more likely they are to have prostate trouble.

Some common problems are

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


[Learn More in MedlinePlus]

Prostate Problems Explains prostate problems including prostatitis and benign prostatic hyperplasia. Reviews common tests for these conditions, as well as treatment side effects.
[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)