A51.39 Other secondary syphilis of skin

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Syphilitic leukoderma
• Syphilitic mucous patch

Excludes1 (never code together)

• late syphilitic leukoderma (A52.79)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 091.3 Secondary syphilis of skin or mucous membranes (approximate)

Code annotations containing back-references to A51.39

Back-references to A51.39

• Type 1 Excludes: A52.79 Other symptomatic late syphilis ("syphilitic leukoderma (secondary) (A51.39)")

Back-references to A51

• Type 2 Excludes: N34 Urethritis and urethral syndrome ("urethritis in diseases with a predominantly sexual mode of transmission (A50-A64)")

Diagnosis Index entries for A51.39

• Atrophoderma, atrophodermia (of) › maculatum › syphilitic
• Atrophy, atrophic (of) › macular (dermatological) › syphilitic, skin
• Leukoderma, leukodermia NEC › syphilitic
• Mucous › patches (syphilitic)
• Patches › mucous (syphilitic)
• Rupia (syphilitic)
• Syphilid
• Syphilis, syphilitic (acquired) › anus (late) › secondary
• Syphilis, syphilitic (acquired) › atrophoderma maculatum
• Syphilis, syphilitic (acquired) › early › skin
• Syphilis, syphilitic (acquired) › early › symptomatic › secondary
• Syphilis, syphilitic (acquired) › early › ulcer
• Syphilis, syphilitic (acquired) › leukoderma
• Syphilis, syphilitic (acquired) › lip
• Syphilis, syphilitic (acquired) › macular atrophy of skin
• Syphilis, syphilitic (acquired) › mouth (secondary)
• Syphilis, syphilitic (acquired) › mucocutaneous (secondary)
• Syphilis, syphilitic (acquired) › mucous › membrane (secondary)
• Syphilis, syphilitic (acquired) › mucous › patches
• Syphilis, syphilitic (acquired) › pharynx (late) › secondary
• Syphilis, syphilitic (acquired) › secondary (and primary) › anus
• Syphilis, syphilitic (acquired) › secondary (and primary) › mouth
• Syphilis, syphilitic (acquired) › secondary (and primary) › mucous membranes
• Syphilis, syphilitic (acquired) › secondary (and primary) › pharynx
• Syphilis, syphilitic (acquired) › secondary (and primary) › skin
• Syphilis, syphilitic (acquired) › secondary (and primary) › tonsil
• Syphilis, syphilitic (acquired) › secondary (and primary) › ulcer
• Syphilis, syphilitic (acquired) › secondary (and primary) › vulva
• Syphilis, syphilitic (acquired) › skin (with ulceration) (early) (secondary)
• Syphilis, syphilitic (acquired) › tonsil (lingual) (late) › secondary
• Syphilis, syphilitic (acquired) › ulcer (any site) (early) (secondary)
• Syphilis, syphilitic (acquired) › vulva › secondary
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › syphilitic (any site) (early) (secondary)

Nearby codes

• A51.1 Primary anal syphilis
• A51.2 Primary syphilis of other sites
• A51.3 Secondary syphilis of skin and mucous membranes
• A51.31 Condyloma latum
• A51.32 Syphilitic alopecia
• A51.39 Other secondary syphilis of skin (this code)
• A51.4 Other secondary syphilis
• A51.41 Secondary syphilitic meningitis
• A51.42 Secondary syphilitic female pelvic disease
• A51.43 Secondary syphilitic oculopathy
• A51.44 Secondary syphilitic nephritis