N42.3 ICD-10-CA code: Dysplasia of prostate
N42.3 is the ICD-10-CA code for “Dysplasia of prostate” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
N42.3Dysplasia of prostate
ICD-10-CA · Canada · Also written N423
Index terms
Entries in CIHI’s alphabetical index that lead to N42.3. Searching the index by the condition the note names is how coders reach this code.
- Dysplasia, prostate (prostatic) (low grade)
- Neoplasia, intraepithelial, prostate (prostatic) (low grade)
Notes for N42.3
As CIHI prints them, with any note N42.3 takes from the headings above it.
Includes
- Low grade dysplasia
Excludes
Conditions classified elsewhere.
- High grade dysplasia of prostate (D07.5)
- Certain conditions originating in the perinatal period (P00-P96)certain infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 14: Diseases of the genitourinary system (N00-N99)
Where N42.3 sits
- 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
- 2Block N40-N51Diseases of male genital organs
- 3Category N42Other disorders of prostate
- 4Valid code N42.3Dysplasia of prostate
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code N42.3 mean?
N42.3 is the ICD-10-CA code for “Dysplasia of prostate” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is N42.3 in ICD-10-CA?
N42.3 sits under N42 Other disorders of prostate, within N40-N51 Diseases of male genital organs, within Chapter 14: Diseases of the genitourinary system (N00-N99).
What coding notes apply to N42.3?
ICD-10-CA lists Includes, Excludes notes for N42.3, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.