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ICD-10 diagnosis code

A18.4 Tuberculosis of skin and subcutaneous tissue

This page in Swedish

A18.4 is the ICD-10 code for Tuberculosis of skin and subcutaneous tissue. It is a four-character subcategory of A18 (Tuberculosis of other organs), the most specific level in the WHO edition. It belongs to the block A15–A19 (Tuberculosis) in Chapter I, Certain infectious and parasitic diseases.

Code type
Subcategory (4 characters)
Chapter
I · A00–B99
Classification
WHO ICD-10, 2019 version

What A18.4 includes

Conditions and terms that are coded here.

  • Erythema induratum, tuberculous
  • Lupus:
    • exedens
    • vulgaris: NOS
    • vulgaris: of eyelid H03.1
  • Scrofuloderma

What A18.4 excludes

Conditions that look similar but belong under another code.

  • lupus erythematosus L93.-
  • lupus erythematosus

A18.4 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

A18.4Tuberkulos i hud och subkutan vävnad

  • A18.4CLupus vulgaris UNS
  • A18.4DScrofuloderma
  • A18.4ETuberkulöst erythema induratum
  • A18.4FTuberkulöst erythema nodosum
  • A18.4GTuberkulöst hudsår
  • A18.4HTuberculosis verrucosa cutis
  • A18.4JAcne scrofulosorum
  • A18.4KLichen scrofulosorum
  • and 2 more national subcodes
NorwayICD-10-NO

A18.4Tuberkulose i hud eller underhudsvev

DenmarkICD-10-DK

DA184Tuberkulose i hud og underhud

  • DA184ALupus
  • DA184BLupus excedens
  • DA184CLupus vulgaris
  • DA184DScrofuloderma
  • DA184FTuberculosis lichenoides
  • DA184GTuberculosis subcutis
  • DA184HTuberculosis verrucosa cutis
  • DA184IErythema induratum Bazin
  • and 1 more national subcodes
FinlandICD-10-FI

A18.4Ihon ja ihonalaiskudoksen tuberkuloosi

GermanyICD-10-GM

A18.4Tuberkulose der Haut und des Unterhautgewebes

FranceICD-10-FR

A18.4Tuberculose de la peau et du tissu cellulaire souscutané

NetherlandsICD-10-NL

A18.4tuberculose van huid en subcutaan weefsel

United StatesICD-10-CM

A18.4Tuberculosis of skin and subcutaneous tissue

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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