ICD-10 Code
International Classification of Diseases, 10th Revision
Sep 19, 2017
  ICD-10 Code for Tuberculosis of skin & subcutaneous tissue A18.4

A18.4 is a valid1 ICD 10 diagnosis code.

A18.4 is valid for submission for HIPAA-covered transactions.

Chapter 1 Certain infectious and parasitic diseases (A00-B99)
Section A15-A19 Tuberculosis (A15-A19)
Category A18 Tuberculosis of other organs

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Erythema induratum, tuberculous
  • Lupus excedens
  • Lupus vulgaris NOS
  • Lupus vulgaris of eyelid
  • Scrofuloderma
  • Tuberculosis of external ear
Excludes2
  • lupus erythematosus (L93.-)
  • lupus NOS (M32.9)
  • systemic (M32.-)
See also ICD 10 code for

Related Terms to “Tuberculosis of skin and subcutaneous tissue”

  • Acnitis(primary) - A18.4
  • Bazin's disease(primary) (tuberculous) - A18.4
  • Cellulitis(diffuse) (phlegmonous) (septic) (suppurative) - L03.90
    • tuberculous(primary) - A18.4
  • Erythema, erythematous(infectional) (inflammation) - L53.9
    • induratum(nontuberculous) - L52
      • tuberculous - A18.4
    • nodosum - L52
      • tuberculous - A18.4
    • tuberculous(primary) - A18.4
  • Gumma(syphilitic) - A52.79
    • scrofulous(tuberculous) - A18.4
    • tuberculous - A18.4
  • Lichen - L28.0
    • scrofulosus(primary) (tuberculous) - A18.4
  • Lichenoides tuberculosis(primary) - A18.4
  • Lupus
    • exedens - A18.4
    • tuberculous - A18.4
      • eyelid - A18.4
    • vulgaris - A18.4
      • eyelid - A18.4
  • ParonychiaSee also Cellulitis, digit
    • tuberculous(primary) - A18.4
  • Scrofulide(primary) (tuberculous) - A18.4
  • Scrofuloderma, scrofulodermia(any site) (primary) - A18.4
  • Scrofulosus lichen(primary) (tuberculous) - A18.4
  • Tarsitis(eyelid) - H01.8
    • tuberculous - A18.4
  • Tuberculid, tuberculide(indurating, subcutaneous) (lichenoid) (miliary) (papulonecrotic) (primary) (skin) - A18.4
  • Tuberculosis, tubercular, tuberculous(calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) - A15.9
    • abscess(respiratory) - A15.9
      • skin(primary) - A18.4
    • cellulitis(primary) - A18.4
    • colliquativa(primary) - A18.4
    • cutis(colliquativa) (primary) - A18.4
    • ear(inner) (middle) - A18.6
      • external(primary) - A18.4
      • skin(primary) - A18.4
    • erythema(induratum) (nodosum) (primary) - A18.4
    • eyelid(primary) (lupus) - A18.4
    • indurativa(primary) - A18.4
    • lichenoides(primary) - A18.4
    • lupus vulgaris - A18.4
    • papulonecrotic(a) (primary) - A18.4
    • paronychia(primary) - A18.4
    • skin(any site) (primary) - A18.4
    • subcutaneous tissue(cellular) (primary) - A18.4
    • subcutis(primary) - A18.4
    • tarsitis - A18.4
    • ulcer(skin) (primary) - A18.4
    • verruca, verrucosa(cutis) (primary) - A18.4
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
    • skin(atrophic) (chronic) (neurogenic) (non-healing) (perforating) (pyogenic) (trophic) (tropical) - L98.499
      • tuberculous(primary) - A18.4
  • UlcusSee also Ulcer
    • cutis tuberculosum - A18.4
  • Verruca(due to HPV) (filiformis) (simplex) (viral) (vulgaris) - B07.9
    • necrogenica(primary) (tuberculosa) - A18.4
    • tuberculosa(primary) - A18.4
  • Wart(due to HPV) (filiform) (infectious) (viral) - B07.9
    • prosector(tuberculous) - A18.4
    • tuberculous - A18.4
See the 2017 ICD-10-CM Coding Guidelines.

Questions related to A18.4 Tuberculosis of skin and subcutaneous tissue

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.