MCMCB Pro
N42.9

N42.9Disorder of prostate, unspecified

Billable / specific codeICD-10-CM

N42.9 is a billable, specific ICD-10-CM code for disorder of prostate, unspecified. It is valid for submission on a claim.

Risk adjustment

N42.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How N42.9 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to N42.9.

  • Disease, diseasedprostate
  • Disorderprostate
  • Irregular, irregularityprostate
  • Palpableprostate

Related codes at this level

Codes that share N42. If N42.9 is not quite right, the correct code is usually one of these.

Questions about N42.9

Is N42.9 a billable ICD-10-CM code?
Yes. N42.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N42.9 sit in the tabular list?
Diseases of the genitourinary system (N00-N99), in the block Diseases of male genital organs (N40-N53).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.