ICD-10-CM code · FY2027
I49.5 Sick sinus syndrome
BillableValid for claims as a specific diagnosis code
About I49.5
EvidencePulse™by 2 Minute Medicine®
Go deeper into arrhythmia.
Ask about the latest evidence, the landmark trials or what guidelines recommend, with every study cited. No ads, no sponsored answers.
Coding notes for I49.5
Applicable to Other names for conditions reported with this code.
- Tachycardia-bradycardia syndrome
Also applies, from I49 Other cardiac arrhythmias
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
Code first Report the underlying condition's code before this one.
Chapter 9 notes (apply to every code in it)
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- 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.-)
Related codes in I49
- I49.0 Ventricular fibrillation and flutterHeader
- I49.1 Atrial premature depolarizationBillable
- I49.2 Junctional premature depolarizationBillable
- I49.3 Ventricular premature depolarizationBillable
- I49.4 Other and unspecified premature depolarizationHeader
- I49.8 Other specified cardiac arrhythmiasHeader
- I49.9 Cardiac arrhythmia, unspecifiedBillable
Latest research on arrhythmia
- Cardiac arrhythmias may be common among hospitalized adults with COVID-19 and no structural heart disease
- Long-term risk of arrhythmias increased in patients with inflammatory bowel disease
- Double wide-area circumferential ablation not associated with improved freedom from recurrent atrial arrhythmias
- Implantable loop recorder screening for atrial fibrillation associated with increased diagnosis of bradyarrhythmia and pacemaker implantations – A post-hoc analysis of the LOOP randomized clinical trial
- #VisualAbstract: Catheter ablation reduces rates of persistent atrial fibrillation and atrial tachyarrhythmia
2MM+
Read the research behind every diagnosis
2MM+ gives you every study summary in full, Classics downloads of the landmark trials, EvidencePulse and HypeCheck, and ad-free reading.
See 2MM+ plansICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.
Get the app