ICD-11 classes
03 Diseases of the blood or blood-forming organs
Anaemias or other erythrocyte disorders
Polycythaemia
3A81 — Acquired polycythaemia

ICD-11 3A81 — Acquired polycythaemia

Secondary polycythaemia is acquired and caused by either natural or artificial increases in the production of erythropoietin, hence an increased production of erythrocytes.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code 3A81 contains 5 clarifying diagnoses:

1. 3A81.0 — Polycythaemia due to hypoxia, including high altitude
2. 3A81.1 — Polycythaemia due to over-transfusion or blood doping
3. 3A81.2 — Relative polycythaemia
4. 3A81.Y — Other specified acquired polycythaemia
5. 3A81.Z — Acquired polycythaemia, unspecified