ICD-10 Code N42.30

Unspecified dysplasia of prostate

Version 2019 Billable Code Diagnoses For Males Only
ICD-10: N42.30
Short Description:Unspecified dysplasia of prostate
Long Description:Unspecified dysplasia of prostate

Valid for Submission

ICD-10 N42.30 is a billable code used to specify a medical diagnosis of unspecified dysplasia of prostate. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

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

Information for Medical Professionals

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:

  • Diagnoses for males only - Diagnoses for males only.

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code N42.30 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.


Convert N42.30 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 602.3 - Dysplasia of prostate (Approximate Flag)


The following clinical terms are approximate synonyms:

  • Dysplasia of prostate

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 N42.30 are found in the index:

  • - Dysplasia - See Also: Anomaly;
    • - prostate - See Also: Neoplasia, intraepithelial, prostate; - N42.30

Replacement Code

N4230 replaces the following previously assigned ICD-10 code(s):

  • N42.3 - Dysplasia of prostate

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.