ICD-10

From parent levels

ChapterICertain infectious and parasitic diseasesOpen

Coding note

Use additional code (U82, U83, U84), if desired, to identify resistance to antimicrobial drugs

Inclusions

  • diseases generally recognized as communicable or transmissible

Exclusions

  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium [except obstetrical tetanus] (O98.-)
  • infectious and parasitic diseases specific to the perinatal period [except tetanus neonatorum, whooping cough, congenital syphilis, perinatal gonococcal infection and perinatal human immunodeficiency virus [HIV] disease] (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)
BlockA50-A64Infections with a predominantly sexual mode of transmissionOpen

Exclusions

  • human immunodeficiency virus [HIV] disease (B20-B24)
  • nonspecific and nongonococcal urethritis (N34.1)
  • Reiter disease (M02.3)
CategoryA51Early syphilisOpen

A51.3

CategoryBlock A50-A64Chapter I

Secondary syphilis of skin and mucous membranes

Inclusions

  • Condyloma latum
  • Syphilitic: alopecia† (L99.8*)
  • Syphilitic: leukoderma† (L99.8*)
  • Syphilitic: mucous patch
Parent: A51 Early syphilis