A51 | 
		 | 
		Early syphilis   | 
	
 |  | 
	
		 A51.0 | 
		  | 
		Primary genital syphilis | 
	 
	
		 |  | 
		
 | 
	   | 
 |  | 
	
		 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 | 
	 
	
		 |  | 
		
| Syphilitic leukoderma |  | Syphilitic mucous patch |  	
		| Excludes1 | 
		late syphilitic leukoderma (A52.79)
  | 
	 
 
 | 
	   |    | 
 |  | 
	
		 A51.4 | 
		 | 
		Other secondary syphilis | 
	 
 |  | 
	
		 A51.41 | 
		 | 
		Secondary syphilitic meningitis | 
	 
  |   |  | 
	
		 A51.42 | 
		  | 
		Secondary syphilitic female pelvic disease | 
	 
	
		 |  | 
		
 | 
	   |   |  | 
	
		 A51.43 | 
		  | 
		Secondary syphilitic oculopathy | 
	 
	
		 |  | 
		
| Secondary syphilitic chorioretinitis |  | Secondary syphilitic iridocyclitis, iritis |  | Secondary syphilitic uveitis |   
 | 
	   |   |  | 
	
		 A51.44 | 
		 | 
		Secondary syphilitic nephritis | 
	 
  |   |  | 
	
		 A51.45 | 
		 | 
		Secondary syphilitic hepatitis | 
	 
  |   |  | 
	
		 A51.46 | 
		 | 
		Secondary syphilitic osteopathy | 
	 
  |   |  | 
	
		 A51.49 | 
		  | 
		Other secondary syphilitic conditions | 
	 
	
		 |  | 
		
| Secondary syphilitic lymphadenopathy |  | Secondary syphilitic myositis |   
 | 
	   |    | 
 |  | 
	
		 A51.5 | 
		  | 
		Early syphilis, latent | 
	 
	
		 |  | 
		
| Syphilis (acquired) without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after infection. |   
 | 
	   | 
 |  | 
	
		 A51.9 | 
		 | 
		Early syphilis, unspecified | 
	 
  |