ICD-11 classes
21 Symptoms, signs or clinical findings, not elsewhere...
Symptoms, signs or clinical findings of the circulatory...
Symptoms or signs involving the circulatory system
MC81 — Abnormalities of heart beat

ICD-11 MC81 — Abnormalities of heart beat

Abnormalities of heart beat is arrhythmia which is any disorder of the heart rate or rhythm. It means that the heart beats too quickly, too slowly or with an irregular pattern.

The diagnosis includes nothing.

Diagnosis with code MC81 contains 7 clarifying diagnoses:

1. MC81.0 — Tachycardia, unspecified
2. MC81.1 — Bradycardia, unspecified
3. MC81.2 — Palpitations
4. MC81.3 — Paroxysmal tachycardia
   It contains 1 clarifying diagnosis.
5. MC81.4 — Pulseless electrical activity, not elsewhere classified
6. MC81.Y — Other specified abnormalities of heart beat
7. MC81.Z — Abnormalities of heart beat, unspecified

The diagnosis is coded elsewhere:

• Symptoms or signs involving the circulatory system #12222
• Abnormalities of heart beat #12234