I45.6
Pre-excitation syndrome
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 10 never code together
I00-I99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- transient cerebral ischemic attacks and related syndromes (G45.-)G45.-
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 6
I45.6code
Inclusion terms
- Accelerated atrioventricular conduction
- Accessory atrioventricular conduction
- Anomalous atrioventricular excitation
- Lown-Ganong-Levine syndrome
- Pre-excitation atrioventricular conduction
- Wolff-Parkinson-White syndrome
Index entries leading here 7
- Accelerated atrioventricular conduction I45.6
- Accessory (congenital)
- atrioventricular conduction I45.6
- Excitation
- anomalous atrioventricular I45.6
- Anomaly, anomalous (congenital) (unspecified type) Q89.9
- atrioventricular
- excitation I45.6
- atrioventricular
- Lown-Ganong-Levine syndrome I45.6
- Pre-excitation atrioventricular conduction I45.6
- Wolff-Parkinson-White syndrome I45.6
Alongside this code 8 same parent — I45
I45.0 Right fascicular block I45.1 Other and unspecified right bundle-branch block category I45.2 Bifascicular block I45.3 Trifascicular block I45.4 Nonspecific intraventricular block I45.5 Other specified heart block I45.8 Other specified conduction disorders category I45.9 Conduction disorder, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.