ICD-11 classes
01 Certain infectious or parasitic diseases
Mycobacterial diseases
1B21 — Infections due to non-tuberculous mycobacteria

ICD-11 1B21 — Infections due to non-tuberculous mycobacteria

Any condition caused by an infection with Mycobacteria excluding infections due to Mycobacterium tuberculosis complex and Mycobacterium leprae. These conditions commonly present with lung disease; however, symptoms are dependent on the site of infection. Transmission is by direct contact with non-tuberculous Mycobacteria in the environment. Confirmation is by identification of non-tuberculous Mycobacteria from the affected site(s).

The diagnosis includes nothing.

It excludes 2 items.

  • Leprosy (1B20)
  • Tuberculosis (1B10-1B1Z)

Diagnosis with code 1B21 contains 7 clarifying diagnoses:

  1. 1B21.0 — Pulmonary infection due to non-tuberculous mycobacterium
  2. 1B21.1 — Non-tuberculous mycobacterial lymphadenitis
  3. 1B21.2 — Cutaneous non-tuberculous mycobacterial infection
    It contains 3 clarifying diagnoses.
  4. 1B21.3 — Disseminated non-tuberculous mycobacterial infection
  5. 1B21.4 — Gastrointestinal non-tuberculous mycobacterial infection
  6. 1B21.Y — Non-tuberculous mycobacterial infection of other specified site
  7. 1B21.Z — Non-tuberculous mycobacterial infection of unspecified site

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