I00–I99: Diseases of the Circulatory System
Chapter 9 of ICD-10-CM 2027, 1,807 codes in 10 blocks.
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Chapter instructions
Excludes2: not included here, code separately if applicable
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Codes in this chapter
All codesBillable only1,807 results
- I44.1Atrioventricular block, second degree
- I44.2Atrioventricular block, complete
- I44.3Other and unspecified atrioventricular block
- I44.30Unspecified atrioventricular block
- I44.39Other atrioventricular block
- I44.4Left anterior fascicular block
- I44.5Left posterior fascicular block
- I44.6Other and unspecified fascicular block
- I44.60Unspecified fascicular block
- I44.69Other fascicular block
- I44.7Left bundle-branch block, unspecified
- I45Other conduction disorders
- I45.0Right fascicular block
- I45.1Other and unspecified right bundle-branch block
- I45.10Unspecified right bundle-branch block
- I45.19Other right bundle-branch block
- I45.2Bifascicular block
- I45.3Trifascicular block
- I45.4Nonspecific intraventricular block
- I45.5Other specified heart block
- I45.6Pre-excitation syndrome
- I45.8Other specified conduction disorders
- I45.81Long QT syndrome
- I45.89Other specified conduction disorders
- I45.9Conduction disorder, unspecified
- I46Cardiac arrest
- I46.2Cardiac arrest due to underlying cardiac condition
- I46.8Cardiac arrest due to other underlying condition
- I46.9Cardiac arrest, cause unspecified
- I47Paroxysmal tachycardia
- I47.0Re-entry ventricular arrhythmia
- I47.1Supraventricular tachycardia
- I47.10Supraventricular tachycardia, unspecified
- I47.11Inappropriate sinus tachycardia, so stated
- I47.19Other supraventricular tachycardia
- I47.2Ventricular tachycardia
- I47.20Ventricular tachycardia, unspecified
- I47.21Torsades de pointes
- I47.22Catecholaminergic polymorphic ventricular tachycardia [CPVT]
- I47.29Other ventricular tachycardia
- I47.9Paroxysmal tachycardia, unspecified
- I48Atrial fibrillation and flutter
- I48.0Paroxysmal atrial fibrillation
- I48.1Persistent atrial fibrillation
- I48.11Longstanding persistent atrial fibrillation
- I48.19Other persistent atrial fibrillation
- I48.2Chronic atrial fibrillation
- I48.20Chronic atrial fibrillation, unspecified
- I48.21Permanent atrial fibrillation
- I48.3Typical atrial flutter