N45.1 Epididymitis

Billable ICD-10-CM code, FY2026.

Applies from N45 Orchitis and epididymitis

Use additional code

• code (B95-B97), to identify infectious agent.

MS-DRG index

Defines the logic of DRG(s) 727-728 in MDC 12.

Approximate ICD-9-CM (GEMs)

• 604.90 Orchitis and epididymitis, unspecified (approximate)
• 604.99 Other orchitis, epididymitis, and epididymo-orchitis, without mention of abscess (approximate)

Code annotations containing back-references to N45.1

Back-references to N45

• Type 1 Excludes: N49 Inflammatory disorders of male genital organs, not elsewhere classified ("orchitis and epididymitis (N45.-)")

Diagnosis Index entries for N45.1

• Didymytis
• Epididymitis (acute) (nonvenereal) (recurrent) (residual)
• Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) › epididymis (infectional)
• Periepididymitis

Nearby codes

• N45 Orchitis and epididymitis
• N45.1 Epididymitis (this code)
• N45.2 Orchitis
• N45.3 Epididymo-orchitis
• N45.4 Abscess of epididymis or testis