N51 Disorders of male genital organs in diseases classified elsewhere

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• amebic balanitis (A06.8)
• candidal balanitis (B37.42)
• gonococcal balanitis (A54.23)
• gonococcal prostatitis (A54.22)
• herpesviral [herpes simplex] balanitis (A60.01)
• trichomonal prostatitis (A59.02)
• tuberculous prostatitis (A18.14)

Code first

• underlying disease, such as:
• filariasis (B74.0-B74.9)

Applies from N51 Disorders of male genital organs in diseases classified elsewhere

Excludes1 (never code together)

• amebic balanitis (A06.8)
• candidal balanitis (B37.42)
• gonococcal balanitis (A54.23)
• gonococcal prostatitis (A54.22)
• herpesviral [herpes simplex] balanitis (A60.01)
• trichomonal prostatitis (A59.02)
• tuberculous prostatitis (A18.14)

Code first

• underlying disease, such as:
• filariasis (B74.0-B74.9)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 608.81 Disorders of male genital organs in diseases classified elsewhere (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.

Diagnosis Index entries for N51

• Chylocele (nonfilarial) › filarial
• Chylocele (nonfilarial) › tunica vaginalis › filarial
• Epididymitis (acute) (nonvenereal) (recurrent) (residual) › filarial
• Mumu
• Orchitis (gangrenous) (nonspecific) (septic) (suppurative) › filarial

Nearby codes

• N51 Disorders of male genital organs in diseases classified elsewhere (this code)