N42.32 Atypical small acinar proliferation of prostate

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 729-730 in MDC 12.

Approximate ICD-9-CM (GEMs)

• 602.3 Dysplasia of prostate (approximate)

Code annotations containing back-references to N42.32

Back-references to N42.3

• Type 1 Excludes: D07.5 Carcinoma in situ of prostate ("dysplasia (mild) (moderate) of prostate (N42.3-)")
• Type 1 Excludes: D07.5 Carcinoma in situ of prostate ("prostatic intraepithelial neoplasia II [PIN II] (N42.3-)")

Diagnosis Index entries for N42.32

• Proliferation (s) › prostate, atypical small acinar

Nearby codes

• N42.0 Calculus of prostate
• N42.1 Congestion and hemorrhage of prostate
• N42.3 Dysplasia of prostate
• N42.30 Unspecified dysplasia of prostate
• N42.31 Prostatic intraepithelial neoplasia
• N42.32 Atypical small acinar proliferation of prostate (this code)
• N42.39 Other dysplasia of prostate
• N42.8 Other specified disorders of prostate
• N42.81 Prostatodynia syndrome
• N42.82 Prostatosis syndrome
• N42.83 Cyst of prostate