A50.59

Other late congenital syphilis, symptomatic

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 8 never code together

A50-A64block

Excludes1

nonspecific and nongonococcal urethritis (N34.1)N34.1
Reiter's disease (M02.3-)M02.3-

Excludes2

human immunodeficiency virus [HIV] disease (B20)B20

A00-B99chapter

Excludes1

certain localized infections - see body system-related chapters

Excludes2

carrier or suspected carrier of infectious disease (Z22.-)Z22.-
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
influenza and other acute respiratory infections (J00-J22)J00-J22

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 3

A50.5code

Inclusion terms

Any congenital syphilitic condition specified as late or manifest two years or more after birth.

A00-B99chapter

Includes

diseases generally recognized as communicable or transmissible

Use additional code

code to identify resistance to antimicrobial drugs (Z16.-)Z16.-

Index entries leading here 17

Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) L02.91
- Dubois A50.59
Syphiloma A52.79
- congenital A50.59
Stenosis, stenotic (cicatricial) — see also Stricture
- larynx J38.6
  - syphilitic A52.73
    - congenital A50.59
- esophagus K22.2
  - syphilitic A52.79
    - congenital A50.59
Stricture — see also Stenosis
- esophagus K22.2
  - syphilitic A52.79
    - congenital A50.59
- larynx J38.6
  - syphilitic A52.73
    - congenital A50.59
- nostril (anterior) (posterior) J34.89
  - syphilitic A52.73
    - congenital A50.59
Syphilis, syphilitic (acquired) A53.9
- congenital A50.9
  - late, or 2 years or more after birth NEC A50.7
    - symptomatic or with manifestations NEC A50.59
- gumma NEC A52.79
  - congenital A50.59
- stigmata (congenital) A50.59
Gumma (syphilitic) A52.79
- congenital A50.59
Laryngitis (acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative) J04.0
- syphilitic (late) A52.73
  - congenital A50.59
Laryngotracheitis (acute) (Infectional) (infective) (viral) J04.2
- syphilitic (late) A52.73
  - congenital A50.59
Leontiasis
- syphilitic (late) A52.78
  - congenital A50.59
Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) N05.9
- syphilitic (late) A52.75
  - congenital A50.59
Perforation, perforated (nontraumatic) (of)
- palatine vault Q35.1
  - syphilitic A52.79
    - congenital A50.59
Sarcocele (benign)
- syphilitic A52.76
  - congenital A50.59
Hepatitis K75.9
- syphilitic (late) A52.74
  - congenital (early) A50.08
    - late A50.59
Disease, diseased — see also Syndrome
- Dubois (thymus) A50.59
Dubois' disease (thymus gland) A50.59
Glomerulonephritis N05.9
- in (due to)
  - syphilis (late) congenital A50.59
Stigmata congenital syphilis A50.59

Alongside this code 7 same parent — A50.5

A50.51 Clutton's joints A50.52 Hutchinson's teeth A50.53 Hutchinson's triad A50.54 Late congenital cardiovascular syphilis A50.55 Late congenital syphilitic arthropathy A50.56 Late congenital syphilitic osteochondropathy A50.57 Syphilitic saddle nose

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

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This code

Billable: yes
Code set: FY2026
Parent: A50.5
Block: A50-A64
Siblings: 7

Present FY2024–FY2027.