A18.4

Billable

Tuberculosis of skin and subcutaneous tissue

A18.4 is the ICD-10-CM code for Tuberculosis of skin and subcutaneous tissue. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Parent
A18
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

Includes

  • Erythema induratum, tuberculous
  • Lupus exedens
  • Lupus vulgaris NOS
  • Lupus vulgaris of eyelid
  • Scrofuloderma
  • Tuberculosis of external ear

Excludes2 — not included here

  • lupus erythematosus (L93.-)
  • systemic lupus erythematosus (M32.-)

Frequently asked questions

What is ICD-10 code A18.4?
A18.4 is the ICD-10-CM code for "Tuberculosis of skin and subcutaneous tissue". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A18.4 a billable code?
Yes — A18.4 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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