ICD-11 classes
15 Diseases of the musculoskeletal system or connective...
Nonorgan specific systemic autoimmune disorders
4A43 — Overlap or undifferentiated nonorgan specific systemic...

ICD-11 4A43 — Overlap or undifferentiated nonorgan specific systemic autoimmune disease

Nonorgan specific systemic autoimmune diseases which do not fulfil the diagnostic criteria for any single recognised disease entity.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code 4A43 contains 7 clarifying diagnoses:

1. 4A43.0 — IgG4 related disease
   It contains 2 clarifying diagnoses.
2. 4A43.1 — Mikulicz disease
3. 4A43.2 — Sjögren syndrome
   It contains 5 clarifying diagnoses.
4. 4A43.3 — Mixed connective tissue disease
5. 4A43.4 — Diffuse eosinophilic fasciitis
6. 4A43.Y — Other specified overlap non-organ specific systemic autoimmune disease
7. 4A43.Z — Undifferentiated non-organ specific systemic autoimmune disease

The diagnosis is coded elsewhere:

• Nonorgan specific systemic autoimmune disorders #3617
• Overlap or undifferentiated nonorgan specific systemic autoimmune disease #3652
• Nonorgan specific systemic autoimmune disorders involving the skin #15828
• Overlap or undifferentiated nonorgan specific systemic autoimmune disease #15845